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Question

A ball is in a hot air balloon that starts from rest at t = 0 and accelerates upwards at 2m/s2. After 10s, the ball is dropped from the balloon

Draw the a-t graph of the ball from t =0


A

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B

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C

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D

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Solution

The correct option is D


As the hint suggests, acceleration till t = 10s is 2m/s2and after is t = -10 m/s2

Answer is D. Acceleration does not increase or decrease gradually.


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