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raijin
raijin raijin
  • 09-12-2014
  • Physics
Answered

A 33 kg gun is standing on a frictionless surface. The gun fires a 57.7g bullet with a muzzle velocity of 325m/s. The positive direction is that of the bullet.

Calculate the kinetic energy of thebullet immediately after the gun was fired. Answer in units of J

Verified Answer :

olemakpadu
olemakpadu olemakpadu
  • 09-12-2014

Kinetic Energy =  (1/2) mv^2.

m = 57.7 g = 57.7/1000 = 0.00577 kg.
v = 325 m/s.

E = 0.5 0.00577 325^ 2.    Use your calculator.

E = 304.728125  J.

That's the kinetic energy.

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