Physical Science, New York Edition

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
Physical Science - New York Edition
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