Question

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

Answer 1

h = Vi *t -1/2*g*t^2
Vf=0=Vi -g*t

Answer 2

plug in t=3 s and you have two equations with two unknowns...

Answer 3

if you use g=9.8 m/s^2 Vi will be in m/s, h will be in meters.

Answer 4

would it 0.4591

Answer 5

no. try again. use the second equation to find Vi. plug that into the first equation to find h.

Answer 6

0.306

Answer 7

how are you getting these numbers?

Answer 8

v=u-gt
?

Answer 9

final velocity = 0

Answer 10

1.5 intial velocity?

Answer 11

vi*3-.5*g*3^2? =1.5?

Answer 12

find Vi first.