GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two bouncy balls hitting each other.
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A pitcher throws a baseball.
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Two cars smash into each other and stick together.
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A bowling ball striking a pin
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A bug smashes into a windshield.
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Detailed explanation-1: -Elastic collisions include kicking a soccer ball and hitting two billiard balls together. In these examples, the momentum of the foot, or the first ball, is transferred to the second ball. Thus, momentum is conserved.
Detailed explanation-2: -When one moving object collides with another moving object, the motion of both objects changes. For example, when a bowling ball strikes the pins, the bowling ball slows down. It loses momentum.
Detailed explanation-3: -For instance, collisions of billiard balls are almost perfectly elastic, but there is still some short of energy loss. On the other hand, a bullet being shot into a target covering itself would be more inelastic, since the final velocity of a bullet, and the target must be at the same.