A ball bearing is projected vertically upwards from the ground with a velocity of 15ms-1....

WAEC 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 Answer: Option B

Explanation

t = 2\(\frac{(v - u)}{g} = 2\frac{(0 - 15)}{-10}\)

\(\frac{2 \times 15}{10}\) = 3.0s

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A ball bearing is projected vertically upwards from the ground with a velocity of 15ms-1....

Correct Answer: Option B

Explanation

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