GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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impulse, time
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impulse, force
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force, time
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time, force
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Detailed explanation-1: -Increasing the time of the impact results in a decrease in the force. Therefore if t is increased, for a constant change in momentum, the force on the body is reduced.
Detailed explanation-2: -A force acting for a given amount of time will change an object’s momentum. Put another way, an unbalanced force always accelerates an object-either speeding it up or slowing it down. If the force acts opposite the object’s motion, it slows the object down.
Detailed explanation-3: -Impulse of Force It is equal to the change of momentum of an object that isn’t changing mass. This is a useful concept when you are studying impact forces. If you increase the time over which the change of force happens, the impact force also decreases.
Detailed explanation-4: -When an egg is dropped from a higher height, it reaches a greater speed before hitting the ground. So the egg dropped from 5 meters has a greater velocity when it strikes the ground. It thus experiences the greater velocity change during the collision.