A. 25.0m
B. 20.0m
C. 1.3m
D. 1.0m
Correct Answer:
Option C – 1.3m
Explanation
P.E = K.E
Therefore, h = v²/2g=5²/2×10
= 1.25; Approx 1.3m
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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]")
