A 5000 kg freight car moving at collides and couples with an 8000 kg freight car…

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

6. A 5000 kg freight car moving at

4 \mathrm{~km} / \mathrm{hr}

collides and couples with an 8000 kg freight car which is initially at rest. The approximate common final speed of these two cars is (A)

1 \mathrm{~km} / \mathrm{h}

(B)

1.3 \mathrm{~km} / \mathrm{h}

(C)

1.5 \mathrm{~km} / \mathrm{h}

(D)

2.5 \mathrm{~km} / \mathrm{h}