A ball is thrown vertically upward with a speed of+20.0 m/s. (a) How high does i

Question

A ball is thrown vertically upward with a speed of+20.0 m/s.
(a) How high does it rise? m
(b) How long does it take to reach its highest point? s (c) How long does the ball take to hit theground after it reaches its highest point? s (d) What is its velocity when it returns to thelevel from which it started?   m/s A ball is thrown vertically upward with a speed of+20.0 m/s.
(a) How high does it rise? m
(b) How long does it take to reach its highest point? s (c) How long does the ball take to hit theground after it reaches its highest point? s (d) What is its velocity when it returns to thelevel from which it started?   m/s

Explanation / Answer

For part a you would use the equation y= V(squared) - Vinitial(squared) / 2a where your V is 20, your Vinitial is 0 and your a is9.80 B. you would use y= Vinitial(t) + 1/2at(squared) where y= your answer from a but be careful you have to factor out t: so it would be t(20-4.90t)= whatever you get for a then you would get two answers t=0 and t= whatever thecalcualtion is: use the second! I'll try to figure out the last two and get back to ya!

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