Energy and Collision Review

That which is needed to do work is called ________________.

• force

• pull

• energy

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When two objects collide their motion changes. Why does this happen?

• energy was transferred from one object to the other

• their gravity changed

• the objects lose mass

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The energy an object has because it is moving is called ______________________

• potential energy

• kinetic energy

• force

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When two objects collide, what will happen?

• both with move in the same direction

• both will move in the opposite direction

• both will stop

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What is transferred at the instant the bat hits the ball?

• matter

• energy

• sound

• light

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The energy of the moving ball ​ (a)   to the still ball when they ​ (b)   . With the energy it ​ (c)   during the collision, the ball that was still now is set in ​ (d)   . The ball that was moving now is ​ (e)   .

• transfers

• collide

• gains

• motion

• still

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When a moving object ​ (a)   with a still object of the ​ (b)   weight, the energy transfer causes the still object to ​ (c)   at the ​ (d)   that hit it.

• collides

• same

• move

• speed of the object

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Which of these is NOT<i> </i>true about energy?

• it moves wind turbines

• it knocks down bowling pins

• it makes a baseball fly

• you can hold it in your hand

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What makes things happen?

• matter

• computers

• energy

• density

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As Maya rides her bicycle faster, she has more (a)   to transfer.

• weight

• density

• energy

• matter

Answer explanation

As an object moves faster, it possesses more kinetic energy. Energy is the capacity to do work or transfer heat, and it increases with the speed of the object, making 'energy' the correct choice.

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