Forces Unit Test

Question 1

The amount of inertia an object has depends on it’s

______________________.

Answer 1

mass

Question 2

Friction is measured in what unit?

Answer 2

N (newtons)

Question 3

The force that opposes the sliding motion of two objects that are touching each other is ______________.

Answer 3

friction

Question 4

Two people are playing tug-of-war. They each pull with equal force. Are the forces balanced or unbalanced?

Answer 4

balanced

Question 5

The sum of of all forces acting on an object is called the ________________ force.

Answer 5

net

Question 6

A person in a head-on collision, who is not wearing a seatbelt, continues to move forward at the original speed of the car because of _________________.

Answer 6

inertia

Question 7

A feather will fall through the air more slowly than a brick because of ___________________acting on it.

Answer 7

air resistance

Question 8

A firefighter using a firehose feels the hose pushing back on him because__________

Answer 8

the water leaving the hose exerts an equal and opposite force on the hose