The displacement of a body at any time t after starting is given by s= 15t-0.4t/2. the velocity of the body will be 7ms-1 after time
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Answer:
Explanation:
Given that: S= 15t-0.4t^2
By Differentiating,
v= 15-0.8t
=> 7= 15-0.8t
=> 7-15= -0.8t
=> -8= -0.8t
=> t= 8/0.8= 10sec........
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