Question

A spacecraft of mass 2000kg moving with 600 m/s suddenly explodes into two pieces. One piece

of mass 500 kg is stationary. The velocity of other part in m/s is

(A) 600 (B) 800

(C) 1500 (D) 1000​

Answer 1

Answer:

Explanation:

=> It's given here,

Mass of a spacecraft, M = 2000kg

Speed of a spacecraft u = 600 m/s

=> Initial momentum of the spacecraft:

Pi = M*u

Pi = 2000 * 600 = 12 x 10^5 kg m/s

=> After explodes into two pieces, the masses of the parts are 500 kg and 1500kg. the 500 kg piece is stationary.

Suppose the speed of the other piece is 'v'.

=> So, total momentum after breaking apart:

Pf = 500(0) + 1500(v) = 1500v

=> By law of conservation of momentum:

Pf = Pi

1500v = 12 x 10^5

v = 12 x 10^5 / 1500

v = 800 m/s

Thus, the velocity of other part is 800 m/s.

Answer 2

Answer:

answer is 1000m/s try it you will get