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An apple drops from a tree and hits the ground in 1.5 s. What is its speed just before it hits the ground?

Answer :

Ivorypenguinsgo

Answer:

14.7 m/sec.

Explanation:

We will go about using the mathematical formula,

Vf - Vo = gT.

To break it down,

Vf = Velocity of the apple just before hitting the ground.  

Vo = Initial velocity of apple = 0  

T = Time for apple to hit the ground = 1.5 sec  

g = Acceleration due to gravity = 9.8 m/sec^2

We then need to substitute appropriate values,

Vf - 0 = 9.8(1.5)  

Vf = 14.7 m/sec.  

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