Question on: WAEC Physics - 2004
A ball bearing is projected vertically upwards from the ground with a velocity of 15ms-1. Calculate the time taken by the ball to return to the ground [g = 10ms-1]
A
1.5s
B
3.0s
C
5.0s
D
7.5s
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Correct Option: B
t = 2(\frac{(v - u)}{g} = 2\frac{(0 - 15)}{-10})
(\frac{2 \times 15}{10}) = 3.0s
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