. A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.00 s for the ball to reach its maximum height. Find (a) the ball’s initial velocity and (b) the height it reaches.

Question

.  A baseball is hit so that it travels straight upward after being struck by the bat.  A fan observes that it takes 3.00 s for the ball to reach its maximum height.  Find (a) the ball’s initial velocity and (b) the height it reaches.

loser66 · Answer

$$V = V_0 +at$$ where V is the velocity when it reach the highest point, it is =0 , a is gravity acceleration. If you choose upward is positive direction, then a = -9.8
replace you get Vo is initial velocity
b) apply h =ho + \(V_0)t + 1/2 at^2 to find h, where ho=0 and t =3, a = -9.8