Glencoe Physical Science

Chapter 3: Forces

Self-Check Quiz.-Eng.

1
When force is increased, what happens to acceleration?
A)It decreases.
B)It stays the same.
C)It increases.
D)It fluctuates.
2
Newton's second law of motion is __________.
A)F = m/a
B)P = m x v
C)A = f/m
D)P = m/v
3
An example of friction is __________.
A)the free fall of astronauts on the space shuttle
B)an ice-skater sliding across the ice
C)a car rolling to a stop at a traffic light
D)a baseball moving in a projectile motion
4
Static friction occurs when two objects are __________.
A)moving against each other
B)colliding
C)rolling
D)at rest
5
A snow skier slowing to a stop after skiing down a mountain is an example of __________ friction.
A)static
B)sliding
C)rolling
D)air
6
What is the friction between a rolling object and the surface it rolls on called?
A)static friction
B)sliding friction
C)air resistance
D)rolling friction
7
What causes some objects to fall slower than others?
A)air resistance
B)gravity
C)forces
D)acceleration
8
When a falling object reaches terminal velocity, the force of gravity __________ the force of air resistance.
A)equals
B)is greater than
C)is less than
D)is unrelated to
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