How can I calculate the joules for speeding objects?

  • Thread starter promeus
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  • #1
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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
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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
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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
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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)) ?
 

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