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please explain

please explain
 

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Grade:12th pass

3 Answers

Manabendra Nath Gaine
12 Points
9 years ago
t4 sec.
Ishita Das Kar
20 Points
9 years ago
t1 sec
Manabendra Nath Gaine
12 Points
9 years ago
Since area under (a-t) graph gives change in velocity, so speed will be maximum at the instant t4.

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