Holly Wilson8430
Quiz by , created more than 1 year ago

Questions from my Grade 12 dynamics unit test. Contains: Tension, inclined planes, projectiles, pulley systems, gravitation and more.

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Holly Wilson8430
Created by Holly Wilson8430 over 8 years ago
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Unit 1: Dynamics

Unit 1: Dynamics

Question 1 of 7

1

A ball is thrown into the air with an initial velocity that has a horizontal component of 4.0 m/s [right] and a vertical component of 3.0 m/s [up]. What is the speed of the ball at the top of its trajectory (ignore air resistance).

Select one of the following:

  • 0

  • 3.0 m/s

  • 4.0 m/s

  • 5.0 m/s

  • 9.8 m/s

Explanation

Question 2 of 7

1

The magnitude of the acceleration of the same ball is:

Select one of the following:

  • 0

  • 3.0 m/s

  • 4.0 m/s

  • 5.0 m/s

  • 9.8 m/s

Explanation

Question 3 of 7

1

The horizontal acceleration of the ball is 0.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 7

1

Box A is released from the top of a frictionless ramp inclined at 30 degrees (I couldn't find the symbol) to the horizontal at the same time that Box B is dropped from the same height into free fall. Which reaches the ground first.

Select one or more of the following:

  • Yes

  • Same time

  • Box A

  • Box B

Explanation

Question 5 of 7

2

Select from the dropdown lists to complete the text.

The normal force of a box on an inclined plane is ( perpendicular to the surface, parallel to the surface, equal in magnitude to the weight, up ) and equal in magnitude to ( mgcosθ, mgsinθ, mgtanθ, the weight of the box, gravity ).

Explanation

Question 6 of 7

1

Fill the blank space to complete the text.

A car of mass M collides with a truck of mass 3M. The force exerted by the car on the truck must be the force exerted by the truck on the car.

Explanation

Question 7 of 7

1

A person of mass M is in an elevator that has an acceleration of A [up]. The apparent weight of that person is M(A+g).

Select one of the following:

  • True
  • False

Explanation

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