Question

1. A force is a vector quantity because it has both

A) mass and acceleration.

B) action and reaction counterparts.

C) magnitude and direction.

 

2. If an object's mass is decreasing while a constant force is applied to the object, the acceleration

A) remains the same.

B) decreases.

C) increases.

 

3. For an action force, there must be a reaction force that

A) is exactly equal in magnitude.

B) always acts in the same direction.

C) is slightly smaller in magnitude than the action force.

D) is slightly larger in amplitude than the action force.

 

4. A baseball player bats a ball with a force of 1000 N. The reaction force that the ball exerts against the bat is

A) more than 1000 N.

B) less than 1000 N.

C) 1000 N.

D) impossible to determine.

 

5. If you push an object a given distance, while applying twice the force, you do

A) twice as much work.

B) four times as much work.

C) half as much work.

D) the same amount of work.

 

6. A job is done slowly, while an identical job is done quickly. Both jobs require the same amount of work, but different amounts of

A) effort

B) power

C) energy

D) none of these