How can I calculate the joules for speeding objects?

  • Thread starter promeus
  • Start date
  • #1
27
0

Main Question or Discussion Point

Ok,lets say an object is moving at a constant speed of Mach 7 for 20000ft. The weight for the object is 2000 lbs.

What formulas could I use to calculate the energy for accelerating objects,or this one in particular?
 

Answers and Replies

  • #2
Doc Al
Mentor
44,867
1,114
The formula for kinetic energy is KE = 1/2mv2.

m = mass, in kg
v = speed, in m/s

KE = kinetic energy, in joules
 
  • #3
DrGreg
Science Advisor
Gold Member
2,272
750
Ok,lets say an object is moving at a constant speed of Mach 7 for 20000ft. The weight for the object is 2000 lbs.

What formulas could I use to calculate the energy for accelerating objects,or this one in particular?
By the way, something moving at constant speed is not accelerating!
 
  • #4
27
0
Thank you I just realized my error,but I was asking for general equations when I said "accelerating objects".
 
  • #5
KE = .5m(v0^2) + mas = .5m(v0^2) + Fs = .5m(v0^2) + F(v0t + .5(a)(t^2)) ?
 

Related Threads for: How can I calculate the joules for speeding objects?

Replies
2
Views
669
Replies
21
Views
2K
  • Last Post
Replies
13
Views
58K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
24
Views
88K
  • Last Post
Replies
1
Views
2K
Replies
2
Views
1K
Replies
2
Views
4K
Top