A ball is thrown vertically upwards from the ground with an initial velocity of 50ms<sup>-1</sup>. What is the total time spent by the ball in the air? (g = 10ms<sup>-2</sup>)

A ball is thrown vertically upwards from the ground with an initial velocity of 50ms-1. What is the total time spent by the ball in the air? (g = 10ms-2)

A ball is thrown vertically upwards from the ground with an initial velocity of 50ms^-1. What is the total time spent by the ball in the air? (g = 10ms^-2)

A 2.5s
B 5.0s
C 10.0s
D 15.0s
E 20.0s

waec 1988 physics

The correct answer is C. 10.0s

Time to move up:

V = U - gt

0 = 50 - 10t

t = 5.

Total time spent on air = 2t = 10.0s

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