Physics

A batted baseball is hit with a velocity of 47.3 m/s, starting from an initial height of 8 m. Find how high the ball travels in two cases:

(a) a ball hit directly upward and

(b) a ball hit at an angle of 70° with respect to the horizontal.

Also find how long the ball stays in the air in each case.

case a

case b

I got part a by taking t(top)=Vo/g =4.83 s --> ymax=8m +47.3m/s(4.83s)-.5(9.8)(4.83)^2 = 122.15m

I don't know how to continue the rest of the problem...

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