A bullet if fired from a gun. The force on the bullet is given by F = 600 – 2 × 10^5 t , where F is in newtons and t in seconds….

Q: A bullet if fired from a gun. The force on the bullet is given by F = 600 – 2 × 105 t, where F is in newtons and t in seconds. The force on the bullet becomes zero as soon as it leaves the barrel. What is the average impulse imparted to the bullet

(a) 9 Ns

(b) zero

(c) 0.9 Ns

(d) 1.8 Ns

Ans: (c)