Question

A 9500 kg boxcar traveling at 17 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 7.0 m/s. What is the mass of the second car?

Answer 1

let m1 be the mass of first car and let m2 be the mass of the second car.From the law of conservation of momentum,momentum before=momentum afte

Answer 2

therefore,\[m1\times v +m2 \times its velocity\]

Answer 3

will be equal to total mass times velocity

Answer 4

therefore,\[9500\times17 + m2\times 0=(9500+m2)\times 7\]

Answer 5

solve that and u get ur answer