Bullet in the air

  • Thread starter porkok
  • Start date
  • #1
porkok
If we shoot bullet to the air (90Degree) it will fall down to same spot or not ? (Without anther force)
Thanks
 

Answers and Replies

  • #2
NateTG
Science Advisor
Homework Helper
2,450
6
Well, where are you shooting from?

I assume that the bullet is not going more than 6km/s?
 
  • #3
porkok
From the ground (yes not over 6km/s). Could you give me answer and explanation ?
Thanks
 
  • #4
NateTG
Science Advisor
Homework Helper
2,450
6
6km/s is Earth escape velocity. I think you'll find that the problem specifies that the bullet is being shot from the surface of the Earth.

If you shot the bullet straight up out of a moving car, would it come down and hit you? What if the car was turning? What if the someone stomped on the brakes?
 
Last edited:
  • #5
porkok
Yes the bullet shot from the surface of the earth and pistol is not moving. So it should fall down in the same spot ,right ?
 
  • #6
porkok
We did not talk about another factor. (No other facetor in this situation)
 
  • #7
NateTG
Science Advisor
Homework Helper
2,450
6
Is the earth stationary?
 
  • #8
porkok
earth is still moving around itself
 
  • #9
NateTG
Science Advisor
Homework Helper
2,450
6
So, would the bullet move with the earth after you shot it?
 
  • #10
HallsofIvy
Science Advisor
Homework Helper
41,833
956
Yes. Conservation of momentum.
 
  • #11
porkok
Could you explain about conservation of momentum ? Thanks
 
  • #12
NateTG
Science Advisor
Homework Helper
2,450
6
Originally posted by HallsofIvy
Yes. Conservation of momentum.
Actually, since the earth is spinning, the reference frame is accelerated, so the bullet would not be moving with the earth.
 

Related Threads on Bullet in the air

  • Last Post
Replies
8
Views
1K
Replies
4
Views
3K
  • Last Post
Replies
6
Views
1K
  • Last Post
Replies
5
Views
3K
Replies
2
Views
2K
Replies
1
Views
13K
  • Last Post
Replies
1
Views
19K
  • Last Post
Replies
5
Views
2K
Top