# Answer to Question #17520 in Mechanics | Relativity for Haley D

Question #17520

a car going a speed of 44 m/s drops a rock from a

height of 2.2 m How far from the point of the drop will the rock hit the ground?The acceleration of

gravity is 9.8 m/s2

height of 2.2 m How far from the point of the drop will the rock hit the ground?The acceleration of

gravity is 9.8 m/s2

Expert's answer

Let's find the fall time of a rock T:

H = gT²/2 ==> T = √(2H/g) = √(2*2.2[m]/9.8[m/s²]) ≈ 0.45 [s].

So, a rock will drop

D = 0.45[s]*44[m/s] = 19.8 meters

far from the point of the drop.

H = gT²/2 ==> T = √(2H/g) = √(2*2.2[m]/9.8[m/s²]) ≈ 0.45 [s].

So, a rock will drop

D = 0.45[s]*44[m/s] = 19.8 meters

far from the point of the drop.

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