forces reviews

What force pulls us to the ground and keeps us from floating away?

• Gravity

• friction

• air resistance

• drag

A force is a push of a ______

• shove

• hit

• speed

• pull

Unbalanced forces are when something ____ in motion

• IS

• Is not

• is at rest

• is still

During tug of war, the teams are pulling with equal force so the rope does not move. This is an example of

• unbalanced forces

• balanced forces

• friction

• gravity

Sam is pushing a cart with 80 Newtons, Kia join him to help push the cart in the same direction. All together our total force was 120 Newtons. How much force did Kia use?

• 100 newtons

• 20 newtons

• 200 newtons

• 40 newtons

During tug of war team A pulls with 200 newtons of force, Team B pulls with 170 newtons of force. How much force needs to be added to team B to balance the forces?

• 20

• 30

• 50

• 40

______ is the force that opposes motion by two surfaces rubbing against each other and slowing down movement.

• air resistance

• drag

• gravity

• friction

Friction can create energy in the form of ______

• coldness

• light

• heat

• motion

air resistance is a type of friction that attempts to __________ motion

• speed up

• slow down

• change direction

• reverse

Tyler is pulling a toy away from his sister. He pulls with 67 Newtons of force, his sister pulls with 57 Newtons of force. Who will win the toy?

• Tyler

• His sister

• its balanced