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Question

If we choose the upward direction as positive which of the following graphs correctly represents the acceleration of a freely falling body?


A

C

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B

D

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C

B

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D

A

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Solution

The correct option is D

A


A since upward direction is given as positive the downward direction will be negative. All throughout the acceleration remains -9.8m/s2.

A person goes from his home to his office taking one hour. There he works for 2 hours and then in half hour reaches home back. A representative displacement-time graph is


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