Using the symbols for velocity, for displacement.
Given:-
Now we have to find the power delivered to the object at .
Now we can apply the following simple kinematic equation on the object:-
As , applying this equation we get:-
As and , using , we get
Object has only kinetic energy, therefore .
Therefore, at ,
Correct answer is .
Another approach:-
At ,
Therefore,
.
The acceleration of an object is given by the equation a(t) = 8, where a is...
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