Posted by Elisa on .
A 4.0 g bullet leaves the muzzle of a rifle with a speed of 310 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.9 m long barrel of the rifle?

Physics 
drwls,
Force x distance = Work done on bullet
= kinetic energy increase = (1/2)MV^2
Solve for the Force 
Physics 
Elisa,
Hello. I keep repeating the problem and I get a huge number.

Physics 
drwls,
Show your work. Make sure the mass of the bullet is converted to kg.
F = (1/2) M V^2 / (0.9 m)
The answer will be in Newtons if m is in kg and V is in m/s. 
Physics 
Elisa,
it worked now.. thank you.. i forgot to convert!

Physics 
j,
A force of 2.3 N is exerted on a 6.6 g rifle bullet. What is the bullet's acceleration

Physics 
amanda,
A 4.1g bullet leaves the muzzle of a rifle with a speed of 300 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.81mlong barrel of the rifle?

Physics 
shakthee,
my answer is 214N. is that right?

Physics 
Attiq ur rehman,
rigth

Physics 
Attiq ur rehman,
right