GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A coin was thrown vertically upwards and it rose to a length of 10 metres. What was the time taken by the body to reach the highest point?
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1.43s
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3s
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2s
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1.4s
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Explanation:
Detailed explanation-1: -We know that at the maximum height, the velocity of the object becomes zero. Therefore, we can substitute 0 for v in the above equation. Therefore, the initial velocity of the object is 14 m/s.
Detailed explanation-2: -momentum is the product of mass and velocity of a particular material . And when ball is thrown vertically upwards its velocity at highest point is zero . Therefore momentum P = m× v = m × 0 =0.
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