Question

A body accelerate uniformly from rest. If the displacement of the body in 5s is 125,find displacement of the body in 7s
please tell me fast​

Answer 1

Explanation:

S=15t−0.4t2

dtds=15−0.8t

ϑ=dtds so,

ϑ=15−0.8t

Given, ϑ=7

7=15−0.8t

t=10 sec

Answer 2

Explanation:

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