GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.Calculate the impulse on the ball.
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1 N*s
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6 N*s
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66 N*s
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None of these
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Explanation:
Detailed explanation-1: -The Impulse Calculator uses the simple formula J=Ft, or impulse (J) is equal to force (F) times time (t). Impulse is also known as change in momentum. Where: J = impulse.
Detailed explanation-2: -The SI unit of impulse is Newton-seconds (Ns) or kg m/s.
Detailed explanation-3: -The impulse-momentum theorem states that the impulse applied to an object will be equal to the change in its momentum.
Detailed explanation-4: -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.
There is 1 question to complete.