# (II) A baseball is hit almost straight up into the air with a speed of about... (II) A baseball is hit almost straight up into the air with a speed of about 20 m/s. (a) How high does it go? (b) How long is it in the air?

apply the formula for Max height H = u^2/2g

where u is intial speed = 20 m/s

g is accletation due to gravity

so

H = (20*20)/(2*9.8)

-----------------------------------------------

apply time period of flgiht

t = 2u/g

t = (2*20)/9.8

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