Collisions

Which of the following would transfer more energy?

• Lowering ball 1 before release

• Raising ball 1 higher before release

• Gently putting ball 1 down next to ball 2

• Keeping ball 1 in the same place

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What effects the amount of energy transferred in a collision?

• the speed

• the weight

• the speed AND weight

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While playing with toy cars, Kirsten and Luca each push a car toward the center of the room. What happens when the toy cars collide?

• Energy is transferred.

• Energy is unchanged.

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(select all that apply) Which of the following concepts are used to analyze collisions?

• forces

• motion

• acceleration

• velocity

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Which of the following are examples of inelastic collisions? (select all that apply)

• When a bowling ball hits a pin

• When you flop on the couch and sink into the cushion

• When a bat hits a ball

• When a soft clay ball hits another soft clay ball

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(Select All That Apply) Bumpers are a key feature on a car to try and prevent injury and keep people safe. Which type of bumper is the least likely to keep the passengers safe in an accident?

• a bumper that is rigid

• a bumper that crumples

• a bumper made out of solid steel

• a bumper made out of soft aluminum

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A snowball is thrown at Mr. Williams and smacks him right in the back and explodes in a cloud of snow. What’s true about the strength of the forces in this situation?

• The force of the snowball was greater than Mr. Williams

• The force of Mr. Williams was greater than the snowball

• The force of both Mr. Williams and the snow ball are equal

• The force of the snowball made Mr. Williams cry a little

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Which of the following are an examples of an elastic collision? (select all that apply)

• When a bowling ball hits a pin

• When soft clay balls hit each other

• When pool balls hit each other

• When a snow ball smashes against a wall

Which of the following is Newton's 3rd law of motion?

• Objects in motion or at rest stay in motion or at rest until a acted upon by another force.

• The force on an object is mathematically related to its acceleration and mass

• always an interaction between two objects

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A __________________ happens when two objects make contact.

• transformation

• distribution

• force

• collision

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