physics
posted by Alyssa .
If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?

hf=hi+Vi*t4.9t^2 solve for t
hf=hi 
what does hi mean ?
posted by Alyssa .
If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
hf=hi+Vi*t4.9t^2 solve for t
hf=hi
what does hi mean ?