# One-Dimensional Gravitational Motion

## Homework Statement

It takes 2.70 s for a small ball with a mass of 0.050 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released.

F=MA
Vo=h/t - .5at

## The Attempt at a Solution

I plugged in all the knowns into the above equation but was still left with an unknown initial V and an unknown height. unsure how to proceed.

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## Homework Statement

It takes 2.70 s for a small ball with a mass of 0.050 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released.

F=MA
Vo=h/t - .5at

## The Attempt at a Solution

I plugged in all the knowns into the above equation but was still left with an unknown initial V and an unknown height. unsure how to proceed.
Well, the problem says the ball was released from rest. What does this imply about the initial V?

Well, the problem says the ball was released from rest. What does this imply about the initial V?
o ok it is zero, is the rest of my equation correct?

Last edited:
so ive got:
0= h/2.7 +13.23

It looks right to me.