Math CentralQuandaries & Queries


Question from Annelle,

a body is thrown vertically downward from a height above the ground. determine the initial velocity and the height of the starting point if after 4 seconds it reaches the ground with velocity of 68 m/s

Hi Annelle,

The acceleration due to gravity is 9.8 meters per second per second. Thus, ignoring other factors like friction an object falling gains 9.8 meters per second in velocity each second. What would its initial velocity have to be in order for its velocity 4 second later is 68 meters per second?

Once you know is initial velocity you can the height.

Write back if you need more assistance,

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