Question

A ball rolls horizontally off a cliff at a speed of 30m/s. It takes 7s for the ball to hit the ground . Calculate the height of the cliff and the horizontal distance traveled by the ball.

Answer 1

Answer:

210m traveled and 240.1m high

Explanation:

Answer:

Horrizontal Distance = 210m

Height = 450.1 m

Explanation:

1. X = Velocity X time

2. H =Vt + 0.5gt*2

Take g = 9.8m/s/s

To find the horrizontal distance, we use eq.1.

x = 30 X 7

x = 210 metres travelled.

for a falling object we use eq.2.

H = 0 X 7 + 0.5 X 9.8 X 7*2

H = 0 +  240.1

H= 240.1 metres high.