Raindrops are hitting the back of a man walking at a speed of 5 kmh-1. If he now starts running in the same direction with a constant acceleration, the magnitude of the velocity of the rain with respect to him will
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a
gradually increase
b
gradually decrease
c
first decrease then increase
d
first increase then decrease
answer is C.
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Detailed Solution
The magnitude will decrease till the direction of the velocity with respect to man becomes vertical. It will increase thereafter.
Raindrops are hitting the back of a man walking at a speed of 5 kmh-1. If he now starts running in the same direction with a constant acceleration, the magnitude of the velocity of the rain with respect to him will