A gun fires a bullet of 50 g with a velocity of 30 ms-1. The gun is then pushed back with a velocity of 1 ms-1 . The mass of gun is

Question

A gun fires a bullet of 50 g with a velocity of 30 ms-1. The gun is then pushed back with a velocity of 1 ms-1 . The mass of gun is (A) 5.5 kg (B) 3.5 kg (C) 1.5 kg (D) 0.5 kg

Tardigrade Admin · Accepted Answer

Applying principle of conservation of momentum, m1 upsilon1 + m2 upsilon2 = 0 (50 × 10-3) (30) + m2 (- 1) = 0 i.e. m2 = 1.5 kg Mass of gun is 1.5 kg

Q. A gun fires a bullet of 50 g with a velocity of $30 m s^{- 1}$ . The gun is then pushed back with a velocity of $1 m s^{- 1}$ . The mass of gun is

5.5 kg

3.5 kg

1.5 kg

0.5 kg

Applying principle of conservation of momentum,
$m_{1} υ_{1} + m_{2} υ_{2} = 0$
$(50 \times 1 0^{- 3}) (30) + m_{2} (- 1) = 0$ i.e. $m_{2} = 1.5 k g$
Mass of gun is 1.5 kg

Q. A gun fires a bullet of 50 g with a velocity of 30ms−1. The gun is then pushed back with a velocity of 1ms−1 . The mass of gun is