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One-Dimensional Gravitational Motion

  • Thread starter BMWPower06
  • Start date
  • #1
92
0

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.


Homework Equations


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.
 

Answers and Replies

  • #2

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.


Homework Equations


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?
 
  • #3
92
0
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:
  • #4
92
0
so ive got:
0= h/2.7 +13.23
 
  • #5
It looks right to me.
 

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