- #1
kriegera
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Homework Statement
A stone weighing 0.2 kilograms is thrown vertically upwards with a velocity of 19.6 meters per second. Neglecting the friction of the air, calculate the kinetic and potential energy it possesses at the end of 1 second and 2 seconds respectively.
Homework Equations
The Attempt at a Solution
I found total kinetic energy here:
Total Kinetic Energy=1/2 times mass times velocity squared
KE = (1/2)(0.2)(19.2) ^2 = 36.864
- just not sure how to find it after "1 and 2 seconds respectively."
I know potential energy =
Egrav=mgh
but i don't have a height value so even rearranging doesn't work:
And rearranging to solve for h=Egrav/mg = ?
How do you solve for kinetic and potential energy when you have the added component of time and missing components of height?