Physics 2.1 Forces and their effects

Frage 1 von 30

1

What is acceleration?

Wähle eine der folgenden:

A measure of how quickly velocity is changing
How fast something is moving

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Frage 2 von 30

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What is the resultant force?

Wähle eine der folgenden:

The single force that represents all the forces acting at a point and has the same effect on its motion as all the other individual forces.
A strong force that acts on an object

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Frage 3 von 30

1

If a non-zero resultant force acts on a stationary object?

Wähle eine oder mehr der folgenden:

The object will accelerate in the direction of the resultant force
It will float
It will move

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Frage 4 von 30

1

If a resultant force acting on a stationary object is zero it will remain stationary?

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 5 von 30

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If the resultant force acting on a moving object is zero?

Wähle eine der folgenden:

It will continue to move at the same velocity
It will slow down
It will stop moving

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Frage 6 von 30

1

If the resultant force acting on an object is non-zero, it will accelerate in the direction of the resultant force?

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 7 von 30

1

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When the resultant force acts on an object, the object can experience 5 forms of acceleration: , , and

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Frage 8 von 30

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How do you calculate the acceleration produced by a resultant force?

Wähle eine der folgenden:

A=F/M or F=MXA
A=(V-U)/T
CHANGE IN VERTICAL/CHANGE IN HORIZONTAL

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Frage 9 von 30

1

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When two objects interact, they exert forces on each other that are and

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Frage 10 von 30

1

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On the surface of the planet, gravity makes everything towards the and gives everything a

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Frage 11 von 30

1

Fülle die Lücken, um den Text zu vervollständigen.

To calculate the weight of an object using its mass and gravitational field strength:
W is
M is
G is

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Frage 12 von 30

1

For a vehicle to travel at a steady speed...

Wähle eine der folgenden:

The driving force (provided by the engine) balances the resistive/frictional forces acting on the vehicle
The driving force is greater than friction
Friction is grater than the driving force

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Frage 13 von 30

1

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The forces that oppose the motion of an object moving through a fluid with the objects .

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Frage 14 von 30

1

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Ways of increasing a vehicle's top speed include:

* : by altering the of a vehicle to make it more .

* Increasing the : meaning the becomes so the drag force on the vehicle will at a speed.

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Frage 15 von 30

1

What is terminal velocity?

Wähle eine der folgenden:

The velocity at which the resistive forces (drag) acting on the object match the force due to gravity (weight)
The fastest rate something travels
Where the gravity is greater than the resistive forces

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Frage 16 von 30

1

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When an object falls through a fluid it initially due to the force of being than the forces. As the object moves , the that act on it . This gradually the until the force is to the force so it wont anymore. It will have reached its () and will fall at a .

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Frage 17 von 30

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The terminal velocity of falling objects depends on their ❌ and ❌. The accelerating force acting on all objects is ❌ and if it were not for ❌, everything would fall at the ❌ rate (like on the ❌). The terminal velocity of objects is determined by its ❌ in comparison to its ❌. The frictional force depends on its shape and area.

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shape

area

gravity

air resistance

same

moon

drag

weight

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Frage 18 von 30

1

A parachute helps to reduce a diver's terminal velocity because it ❌ the surface area which increases the ❌ acting on the diver. This causes the diver to ❌, which ❌ his speed and therefore the ❌.

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increases

air resistance

slow down

reduces

terminal velocity

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Frage 19 von 30

1

What is the stopping distance?

Wähle eine oder mehr der folgenden:

The sum of how fast your going and how long it takes for the brakes to work
The sum of the thinking distance and stopping distance
The sum of the thinking distance and braking distance

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Frage 20 von 30

1

Wähle von der Dropdown-Liste, um den Text zu vervollständigen.

Thinking distance is the distance the vehicle travels during the driver's ( reaction, Braking ) time

Braking distance is the ( distance, metres ) the vehicle travels after the ( brakes, seat belts, reactions ) are applied until it comes to a complete ( stop, slow down, deceleration )

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Frage 21 von 30

1

For a given braking force... what happens to the stopping distance?

Wähle eine der folgenden:

The faster a vehicle is moving, the greater the stopping distance and the braking force needed
The slower the vehicle is moving, the greater the stopping distance, and the less braking force is needed

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Frage 22 von 30

1

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Factors that affect thinking distance:

* How you're going - the faster you go, the the stopping distance
* How to you are - this can be affected by , and
* Bad
* (e.g. rain, noise)

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Frage 23 von 30

1

What does NOT affect braking distance.

Wähle eine der folgenden:

How fast you're going - it takes further to stop
How good you're brakes are - worn or faulty brakes will not have as much force as reliable, new brakes
How good the tyres are- should have a minimum tread depth of 1.6mm to get rid of water in wet conditions
How good the grip of road surface is due to weather conditions (e.g. water, ice, snow, diesel spills) * You don't have as much grip, so travel further before stopping
The make of the car and type of metal it is used from - the stronger the metal frame, the slower the breaking distance

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Frage 24 von 30

1

Braking and kinetic energy transfer:

To slow down a car, ❌ energy needs to be ❌ into other types of ❌. (e.g.thermal and a little sound)

When the brakes of a car are applied, the ❌ between the ❌ and the ❌ converts kinetic energy into thermal energy, which causes the temperature of the brakes to ❌.

So, work is done by the ❌ force to convert the kinetic energy into thermal energy and a little ❌ energy.

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kinetic

thermal

gravitational

converted

swapped

changed

energy

fuel

materials

friction

compression

acceleration

wheels

bonnet

brakes

headlights

increase

decrease

braking

stopping

sound

noise

elastic

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Frage 25 von 30

1

What will NOT happen to an object when a force is applied to it?

Wähle eine der folgenden:

Stretch
Change in shape
Fold

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Frage 26 von 30

1

Is an elastic object one that can change shape under an applied force, and then return to its original shape after the force has been removed?

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 27 von 30

1

Fülle die Lücken, um den Text zu vervollständigen.

When a force does work to change the shape of an elastic object, the object and stores . The is then to energy when the force is and the object returns to its shape.

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Frage 28 von 30

1

When a spring is supported at the top then a weight is attached to the bottom, it stretches. What is the formula for calculating the force applied to an object, given its extension and spring constant?

Wähle eine der folgenden:

F=KXE

F=force applied (N)
K=spring constand (N/M)
E=extension (m - metres)
J=EXG

J=joules
E=energy
G=gravity
U=FXP

U=U-value
F=Friction
P= Pendulum

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Frage 29 von 30

1

Hooke's law:

The extension of an elastic object is ❌ to the ❌ until the ❌ is suceeded

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directly proportional

the same as

less than

force applied

energy applied

heat applied

limit of proportionality

Weight

Length

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Frage 30 von 30

1

Is the limit of proportionality the point in which the an elastic object will no longer extend proportionally with the applied force?

Wähle eins der folgenden:

WAHR
FALSCH

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Physics 2.1 Forces and their effects

Frage 1 von 30

What is acceleration?

Wähle eine der folgenden:

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Frage 2 von 30

What is the resultant force?

Wähle eine der folgenden:

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Frage 3 von 30

If a non-zero resultant force acts on a stationary object?

Wähle eine oder mehr der folgenden:

Erklärung

Frage 4 von 30

If a resultant force acting on a stationary object is zero it will remain stationary?

Wähle eins der folgenden:

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Frage 5 von 30

If the resultant force acting on a moving object is zero?

Wähle eine der folgenden:

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Frage 6 von 30

If the resultant force acting on an object is non-zero, it will accelerate in the direction of the resultant force?

Wähle eins der folgenden:

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Frage 7 von 30

Fülle die Lücken, um den Text zu vervollständigen.

When the resultant force acts on an object, the object can experience 5 forms of acceleration: , , and

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Frage 8 von 30

How do you calculate the acceleration produced by a resultant force?

Wähle eine der folgenden:

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Frage 9 von 30

Fülle die Lücken, um den Text zu vervollständigen.

When two objects interact, they exert forces on each other that are and

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Frage 10 von 30

Fülle die Lücken, um den Text zu vervollständigen.

On the surface of the planet, gravity makes everything towards the and gives everything a

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Frage 11 von 30

Fülle die Lücken, um den Text zu vervollständigen.

To calculate the weight of an object using its mass and gravitational field strength: W is M is G is

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Frage 12 von 30

For a vehicle to travel at a steady speed...

Wähle eine der folgenden:

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Frage 13 von 30

Fülle die Lücken, um den Text zu vervollständigen.

The forces that oppose the motion of an object moving through a fluid with the objects .

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Frage 14 von 30

Fülle die Lücken, um den Text zu vervollständigen.

Ways of increasing a vehicle's top speed include: * : by altering the of a vehicle to make it more . * Increasing the : meaning the becomes so the drag force on the vehicle will at a speed.

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Frage 15 von 30

What is terminal velocity?

Wähle eine der folgenden:

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Frage 16 von 30

Fülle die Lücken, um den Text zu vervollständigen.

When an object falls through a fluid it initially due to the force of being than the forces. As the object moves , the that act on it . This gradually the until the force is to the force so it wont anymore. It will have reached its () and will fall at a .

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Frage 17 von 30

Klicke und ziehe, um den Text zu vervollständigen.

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Frage 18 von 30

A parachute helps to reduce a diver's terminal velocity because it ❌ the surface area which increases the ❌ acting on the diver. This causes the diver to ❌, which ❌ his speed and therefore the ❌.

Klicke und ziehe, um den Text zu vervollständigen.

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Frage 19 von 30

What is the stopping distance?

Wähle eine oder mehr der folgenden:

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Frage 20 von 30

Wähle von der Dropdown-Liste, um den Text zu vervollständigen.

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To calculate the weight of an object using its mass and gravitational field strength:
W is
M is
G is

Ways of increasing a vehicle's top speed include:

* : by altering the of a vehicle to make it more .

* Increasing the : meaning the becomes so the drag force on the vehicle will at a speed.

Factors that affect thinking distance:

* How you're going - the faster you go, the the stopping distance
* How to you are - this can be affected by , and
* Bad
* (e.g. rain, noise)

Hooke's law:

The extension of an elastic object is ❌ to the ❌ until the ❌ is suceeded