Question

a ball is thrown upwards with a velocity of 14m/s from a height of 350 m. find the time taken by the ball to reach the ground.(g= 10m/s2)

Answer 1

ANSWER
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Height attained over 350 m

= v^2 = u^2 - 2gh
= 0 = 196 - 2 × 10 h
=> h = 196 / 20
=> h = 9.8 m

=> TIME TAKEN BY THE BALL TO REACH THE GROUND = √(2h/g)

= √ ( 2 × 359.8 / 10 )
= √ ( 71.96 )
= 8.48 sec
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