Solve the below two problems] A baseball hit just above the ground leaves the ba

Question

Solve the below two problems]

A baseball hit just above the ground leaves the bat at 23 m/s at 45 degree above the horizontal. How far away does the ball strike the ground? Express your answer to two significant figures and include the appropriate units. How much time is the ball in the air? Express your answer to two significant figures and include the appropriate units. What is its maximum height? Express your answer to two significant figures and include the appropriate units. A long jumper maintains a constant horizontal velocity component of 7.15m / s while jumping upward with vertical component 3.80m / s. Determine her horizontal range. Express your answer with the appropriate units.

Explanation / Answer

A. using h = ut + at^2/2

0 = 23sin45 x t -9.8 t^2 /2

t =3.32 sec

d =23cos45 x 3.32 =54 m

b) t =3.32 sec

c) H = (23sin45)^2 / 2g   = 13.50 m

3.70 .

in vertical usinh h = ut + at^2/2

0 = 3.80 x t - 9.8t^2 /2

t =0.776sec

d = 7.15 x 0.776 =5.55 m

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