Question on: WAEC Physics - 2013
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-1
B
6.0ms-1
C
12.0ms-1
D
0.6ms-1
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Correct Option: B
V = u - gt
u = v + gt
= 0 + 10 x 0.6
= 6ms-2
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