Question

Q. A body of mass 1kg flying at 72km/h. It explodes into two pieces. One piece of

mass 0.5kg just stops. What is the speed of the other?

plz help me

no spamming.​

Answer 1

Answer:

144 km/h

Explanation:

Apply momentum conservation.

Initially, particle has a velocity of 72 km/ h

Finally, one 0.5 kg mass has no velocity and assume that the other has velocity v.

P(i) = P(f)

72×1 = 0.5×0 + 0.5×v

ie ;

v/2 = 72

v=72×2 = 144 km/h.