Physics WAEC

A body of mass 20g projected vertically upwards in vacuum returns to the point of projection after 1.2s. [g = 10ms‾²]. Calculate the speed of projection

A. 1.2ms‾²
B. 6.0ms‾²
C. 12.0ms‾²
D. 0.6ms‾²

Correct Answer: Option B

B. 6.0ms‾²

Explanation

V = u – gt

u = v + gt

= 0 + 10 x 0.6

= 6ms‾²

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