Mechanical Aptitude Forces and Motion Principles Questions and Answers 3

Question 1

What type of friction acts on an object that is sliding across a surface?

Accepted Answer

Kinetic friction

Answer

Static friction

Answer

Rolling friction

Answer

Air resistance

Question 2

What force keeps an object moving in a circular path?

Accepted Answer

Centripetal force

Answer

Centrifugal force

Answer

Tangential force

Answer

Gravitational force only

Question 3

If you double the distance between two gravitating objects, what happens to the gravitational force between them?

Accepted Answer

It becomes one-quarter

Answer

It halves

Answer

It doubles

Answer

It becomes one-eighth

Question 4

What is the mechanical advantage of a lever where the effort arm is 3 meters and the load arm is 1 meter?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 5

A 2 kg ball rolling at 5 m/s has what momentum?

Accepted Answer

10 kg·m/s

Answer

2.5 kg·m/s

Answer

7 kg·m/s

Answer

25 kg·m/s

Question 6

What is the acceleration due to gravity near Earth's surface?

Accepted Answer

9.8 m/s²

Answer

8.9 m/s²

Answer

10.8 m/s²

Answer

11.2 m/s²