You throw a tennis ball straight upward. the initial speed is about 12 m/s. part a how long will it take for the ball to reach its maximum height? express your answer to three significant figures and include the appropriate units.

1.2 s

It is given that a ball is thrown vertically upwards with initial velocity, u= 12 m/s.

At the maximum height, instantaneous velocity would be, v= 0 m/s

the ball would decelerate due to gravity,

using equation of motion,

Hence, the time taken by ball to reach its maximum height is 1.2 s when thrown vertically upward with initial velocity of 12 m/s.

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