Forces QUIZ

Based on the friction force of each scenario, match the surface with the photo.

a

b

c

Air Hockey Table (smooth)

Rubber Turf (high roughness)

Rug (medium roughness)

What two things are true about FORCE?

• The unit is m/s

• The unit is Newton

• It is a push or a pull exerted on an object

• It is a only push

If the net force acting on an object is zero,

• the object is speeding up

• the object is slowing down

• the object is not moving

A skydiver falls DOWN toward the ground. As they fall, air resistence (a type of friction) slows them down. What is the direction of air resistance?

• up

• down

• not enough information to answer

A force that opposes motion is known as

• acceleration

• friction

• gravity

• displacement

The force of gravity increases as... (select two that apply)

• the mass of an object increases

• the mass of an object decreases

• the distance between two objects decreases (gets closer)

• the distance between two objects increases (gets furrther apart)

What happens to frictional force as the roughness of an object increases?

• it increases

• it decreases

• roughness has no impact on frictional force

Amy and her friends pull a rope with 200N of force to the left. Charles and his friends pull the rope with 200N of force to the right. What is the net force?

• 400N left

• 400N right

• 0N

Which tug of war scenarior has a net force GREATER than zero?

• A

• B

• Both have a net force greater than zero

What is TRUE about the net force on the box?

• the net force is balanced

• the net force is unbalanced

• the net force is greater than zero

• all the forces acting on the object are going in the same direction