# Acceleration of gravity and baseball problem

during a baseball game, a batter hits a popup to a fielder a distance of D m aways. the acceleration of gravity is 9.8m/s^2. if the ball reamins in the air for T seconds, how high does it rise.
1. h=D/4T
2.h=1/8gT^2
3.h=4D/T
4.h=2D/T
5.h=D/T
6.h=2gT^3
7.h=D/(2T)

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Key:2

the motion in the direction of gravity is not ralated with D, h=0.5gt^2.
t is half of T, for T is up and down, and t is up or down

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so which one is the answer?

Fermat
Homework Helper
Well, the answer is unrelated to D, so that eliminates 5 of the options.

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yea but which one cause if i get it wrong it deducts from my score. n my score is bad enough

Fermat
Homework Helper
Neverland's answer should give you a clue, but you should really be able to work it out by yourself.
The question is asking you to show your knowledge of basic equations of motion.
Do you know these ?

thanks

i figured it out but now they are asking for the angle and they give you the distance and time.

is the distance half of at the maximum height?