Forces and Motion Review

All Three boats have the same mass. Which one experienced the greatest force on it?

• The BLUE BOAT, because it takes more force to slow something down.

• The GREY BOAT because it had the fastest ending speed.

• The ORANGE AND GREY BOATS, the blue boat slowed down and lost force.

• ALL THREE experienced the SAME force because they all changed speed by THE SAME AMOUNT.

ALL three chairs experienced the SAME CHANGE in speed. Which one needed the SMALLEST force to make this happen?

• The Blue Chair

• The Red Chair

• The Yellow Chair

• All three experienced the SAME force.

Scott crashed his skateboard into TWO DIFFERENT MASS shopping carts. The carts sped up by the same amount each time. In which crash did the SKATEBOARD experience more force?

• Crash 1

• Crash 2

• They were both the same.

• Not enough information to tell.

Sandra pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 meters.

Why did the block stop moving?

• The floor exerted a force opposite the block's motion.

• The block ran out of force.

• The floor ate the block.

• The air around the block got too hot.

All three golf balls are the SAME MASS. Which golf ball experienced the biggest FORCE?

• The Purple Ball

• The White Ball

• The Green Ball

• They all experienced the SAME force.

Which soccer ball experienced MORE force in the crash?

• The Pink Ball

• The Blue Ball

• Both experienced the same FORCE

• Neither experienced ANY force.

All three skiers have the SAME MASS. Which one experienced the greatest force when they got bumped into on the slopes?

• The Orange one

• The Yellow one

• The Purple one

• All three experienced the SAME force because their velocity changed by the same amount.

Asteroids of the SAME mass crashed into two different objects in space. In which crash did the asteroid experience a stronger force? How do you know?

• Crash TWO because brown planet has more MASS and needs more force to get it to move the same speed.

• There was no forces exerted on the asteroid

• Crash ONE because the moon is smaller so it hits with more force.

• The force was the SAME because they both changed speed by the same amount.

At dinner, Hans passed the salt shaker to his sister Jessica by sliding it across the wooden table. The salt shaker gradually slowed down and stopped after moving 12 centimeters.

Why did the salt shaker stop moving?

• The salt shaker ran out of force.

• The table exerts a force (called friction) in the opposite direction of the salt shaker.

• The salt all fell out of the salt shaker.

• The salt shaker sped up, actually.

Both kids kick the soccer ball at the SAME time. Which way will the ball travel? Why?

• To the right, because the child in RED exerts more force.

• To the left, because the child in BLUE exerts more force.

• The ball won't move because the forces are the same.

• The ball will explode and the game will be over.