GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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bowling ball because it has more momentum
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ping pong ball because it has more momentum
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both require the same amount of force when catching
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bowling ball because it has less momentum
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Detailed explanation-1: -If a bowling ball and a ping-pong ball are each moving with a velocity of 5 mph, you intuitively understand that it will require more effort to stop the bowling ball than the ping pong ball because of the greater mass of the bowling ball.
Detailed explanation-2: -[a] The final momentum of the bowling ball is twice the initial momentum of the Ping-Pong ball.
Detailed explanation-3: -Alternative Solution: Both the initial momentum and the force acting on the two objects are equal. Therefore the initial velocity and the acceleration of the ping-pong ball isgreater than the bowling ball by the ratio of the bowling ball mass to the ping-pong ball mass. hence the ping-pong has the greater displacement.
Detailed explanation-4: -A massive and fast moving bowling ball must have a large momentum while a light and slow moving tennis ball must have a small momentum. However, a fast tennis ball may have the same momentum as a slow rolling bowling ball due to its high velocity (Fig. 1-3).
Detailed explanation-5: -A bowling ball has more mass than a table-‐ tennis ball, so the bowling ball has a greater inertia. Newton’s first law of motion states that the motion of an object changes only if an unbalanced force acts on the object.