A 2200kg car is travelling at 30 m/s collides with another 2200kg car thats is at rest . The two bumpers lock and the cars move forward together. What is thier final velocity?
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Answered by
13
Answer: 15m/s (assuming frictional forces were negligible)
Explanation:
The formula to find momentum, mass or velocity (knowing any of the two variables) is P(momentum kgm/s) = m(mass/ kg) * v(velocity/ m/s)
We know the mass of Car 1 and its velocity and the mass of Car 2.
Since the masses are the same, then the velocity of the two cars as one body is halved.
I have just happened to work this out today in an exam :D
Answered by
0
Answer:
15 m/s
Explanation:
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