A. 10ms‾¹
B. 15ms‾¹
C. 20ms‾¹
D. 30ms‾¹
Correct Answer: Option D
D. 30ms‾¹
Explanation
V² = U² + 2gh
= 0² + 2 x 10 x 45 = 30
![A body of mass 20g projected vertically upwards in vacuum returns to the point of projection after 1.2s. [g = 10ms-2]. Determine the potential energy of the body at the maximum height of its motion.](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A body of mass 20g projected vertically upwards in vacuum returns to the point of projection after 1.2s. [g = 10ms-2]. Determine the potential energy of the body at the maximum height of its motion.")
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