Acceleration of gravity and baseball problem

  • Thread starter nrc_8706
  • Start date
  • #1
nrc_8706
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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)
 

Answers and Replies

  • #2
Neverland
2
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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
 
  • #3
nrc_8706
71
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?

so which one is the answer?
 
  • #4
Fermat
Homework Helper
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Well, the answer is unrelated to D, so that eliminates 5 of the options.
 
  • #5
nrc_8706
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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
 
  • #6
Fermat
Homework Helper
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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 ?
 
  • #7
nrc_8706
71
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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?
 

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