Answered

On a snow-covered road, a car with a mass of

1.1 × 10^3 kilograms collides head-on with a van

having a mass of 2.5 × 10^3 kilograms traveling at

8.0 meters per second. As a result of the

collision, the vehicles lock together and

immediately come to rest. Calculate the speed of

the car immediately before the collision.

[Neglect friction.] [Show all work, including the

equation and substitution with units.]

Verified Answer :

Giovi

I would use the conservation of momentum p, where p=mv:
\(p_{before}=p_{after}\)
\(1.1*10^{3}v-2.5*10^{3}*8=0\)
and:
\(v=18.2 m/s\)

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