Question

A car of 10 kg is moving at a speed of 5 m/s collides with a
stationary car of 25 kg. If the two cars lock together on impact,
what's the combined velocity of the two cars after the collision?

Answer 1

Explanation:

M1U1+m2u2 = (m1+m2)vf

m1= 10kg

u1=5

m2=25

u2=0

vf=?

10×5+25×0=35 vf

50+0=35Vf

Vf=1.4m/s