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An object is projected horizontally at a velocity of 40m/s from a cliff 20m high. Calculate the distance from the foot of the cliff when the object hits the ground.



Answer :

Answer:

Explanation:

Find the time it takes for the object to hit the ground from 20 m and use this time X horizontal velocity to find the answer .....

Time to hit ground :     d = 1/2 a t^2

                                     20 = 1/2 ( 9.81) t^2      t = 2.019 s

Horizontal distance from cliff    2.019 s  x 40 m/s = 80.8 m from foot of cliff

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