A. 1800J
B. 1600J
C. 600J
D. 440J
Correct Answer: Option B
B. 1600J
Explanation
Potential energy at the highest point = mgh
PE = 4 × 10 × 40 = 1600J
![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]")
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