Question

What is the velocity of a ball dropped from a height of 150 m when it hits the ground? Take the upward direction as positive. (Use decimal notation. Give your answer to three decimal places. Use g = 9.8 m/s 2 .)

Answer 1

Answer:

54.222 m/s

Explanation:

We can find this velocity using the equations of motion;

u = initial velocity of the ball = 0 m/s (the ball was dropped, from rest)

v = final velocity of the ball = ?

y = vertical distance covered by the ball = - 150 m

g = acceleration due to gravity = - 9.8 m/s²

v² = u² + 2gy

v² = 0² + 2(-9.8)(-150)

v² = 2940

v = 54.222 m/s

Hope this Helps!!!

Answer 2

Explanation:

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