Speed and Energy/ Energy Transfer in Collisions

How can the speed of a dropped ball be increased?

• Increase the height from which it is dropped to give it more potential energy

• Decrease the height from which it is dropped to give it more potential energy

• Drop a larger ball to increase the amount of friction

• Roll it down a hill instead to increase the amount of friction

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If you roll a ball down each ramp, which ball will hit the books harder?

• Taller ramp

• Shorter ramp

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The collision of two marbles can cause the _______________ of both marbles to change

• Energy

• Motion

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Friction during a collision causes some kinetic energy to be changed into _______________.

• Chemical Energy

• Potential Energy

• Electricity

• Heat

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Which is evidence that a bowling ball has more energy when it is moving faster than when it is moving slower?

• The bowling ball has a larger mass when it is moving faster than when it is moving slower

• The bowling ball can knock over more pins when it is moving faster than when it is moving slower

• The bowling ball will reach the pins in less time when it is moving faster than when it is moving slower

• A bowling ball can knock over more pins than a soccer ball moving at the same speed

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Suppose you are riding a bike. As you increase speed, your _________________.

• Energy is used up

• Energy of motion increases

• Stored energy increases

• Energy of motion decreases

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Which is NOT an example of a collision causing energy transfer and change in motion?

• A bat strikes a baseball

• A catcher catches a baseball

• A baseball hits the ground

• A baseball flies through the air

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___________ is transformed or transferred; it cannot be made or destroyed

• Energy

• Momentum

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The _____________ energy of a roller coaster is the energy of its motion

• Potential

• Kinetic

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During a collision, some energy can be transferred into ___________ or sound

• Conservation

• Force

• Heat

• Electricity

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