Question

a 10 gram bullet is fired horizontally out of a rifle with a 0.8 m long barrel. The speed of the bullet when it emerges from the barrel is 500 m/s. What was the average force of the exploding gases on the bullet while it traveled through the barrel?

Answer 1

v^2 = 2as
500^2 = 2*a*0.8
now, with a,
F = ma

Answer 2

So would it be 156250 m/s^2
And 1562500 N

Answer 3

watch the units. You need mass in kg

Answer 4

So would it be 156250 m/s^2 and 1562.5 N