A. 11.50 kw
B. 12.60 kw
C. 11.25 kw
D. 12.10 kw
Correct Answer:
Option C – 11.25 kw
Explanation
Power = (work done)/time taken = (mgh)/t
= (750 x 10 x 90)/60 = 11250w = 11.25kw
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![An object of mass 0.25kg moves at a height h above the ground with a speed of 4ms-1, if its mechanical energy at this height is 12 J, determine the value of h. [g = 10ms-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "An object of mass 0.25kg moves at a height h above the ground with a speed of 4ms-1, if its mechanical energy at this height is 12 J, determine the value of h. [g = 10ms-1]")
