A. 90 m
B. 30 m
C. 45 m
D. 60 m
Correct Answer:
Option C – 45 m
Explanation
S = ½gt²
S =½ x 10 x 3² =5 x 9 = 45 m
If it takes an object 3s to fall freely to the ground from a certain height; what is the distance covered by the object?
![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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