# Physics Review!

Quiz by , created almost 4 years ago

## A short review that covers kinematics, forces, work, energy, momentum, and circular motion.

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 Created by Nicholas Weiss almost 4 years ago
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### Question 1

Question
What is the unit for force?
• Newtons
• Joules
• Watts
• kg

### Question 2

Question
What are the units for energy?
• Joule
• Watts
• Newtons
• Pounds

### Question 3

Question
Weight is the same thing as mass.
• True
• False

### Question 4

Question
The coefficient of friction is measured in________________.
• N
• kg
• Joules
• There are no units!

### Question 5

Question
When you double the speed of the object you double its_____________________
• Kinetic Energy
• Potential Energy
• Momentum

### Question 6

Question
145.000 has_______significant figures
• 3
• 4
• 5
• 6

### Question 7

Question
The graph displays an objects position vs. time. During what time interval does the object have an acceleration?
• A
• B
• C
• D

### Question 8

Question
The graph displays an objects position vs. time. During what time interval is the object not moving?
• A
• B
• C
• D

### Question 9

Question
When does the object have a constant negative velocity?
• A
• B
• C
• D

### Question 10

Question
Momentum is always conserved for a single object.
• True
• False

### Question 11

Question
Total kinetic energy is always conserved for inelastic collisions.
• True
• False

### Question 12

Question
Total kinetic energy is conserved during elastic collisions.
• True
• False

### Question 13

Question
What determines the force of static friction acting on an object? (check all that apply)
• The coefficient of friction between the surfaces.
• The normal force of the surface
• The speed of the object
• The energy of the object

### Question 14

Question
When an projectile reaches its peak flight its___________________________. (check more than one box)
• Velocity is 0m/s
• Acceleration is 0m/s/s
• Vertical Velocity is 0m/s
• Horizontal Velocity is 0m/s
• Acceleration is -9.81m/s/s
• Force is 0N

### Question 15

Question
When an object is accelerating we can use the d=rt formula to solve problems involving that object.
• True
• False

### Question 16

Question
A projectiles vertical speed is constant (assuming no air resistance).
• True
• False

### Question 17

Question
A projectile's horizontal speed (assuming no air resistance) is constant.
• True
• False

### Question 18

Question
If the Earth somehow were to shrink to half of its size (but kept the same mass), what would happen to our weight (think universal law of gravity)
• It would double
• It would be cut in half
• It would be 1/4 the original

### Question 19

Question
Centripetal acceleration acts _____________________.
• Tangent to the circular path.
• Away from the center
• To the center
• Along the path of the object in motion

### Question 20

Question
Linear speed of a rotating object acts____________________.