Asked by sarah
a 1200kg car traveling initially qith a speeed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,000kg truck moving in the same direction at 20.0 m/s. the velocity of the car right after the collision is 18.0 m/s to the east. what is the celocity of the truck right after the collision?
Answers
Answered by
drwls
Since this is NOT an elastic collision, only momentum is conserved. You only need to conside momentum on east-west (x) direction.
Mcar*25.0 + Mtruck*20.0 = Mcar*18.0 + Mtruck*V
V is the velocity you want.
210,000 = 21,600 + 9000 V
V = 20.93 s
Mcar*25.0 + Mtruck*20.0 = Mcar*18.0 + Mtruck*V
V is the velocity you want.
210,000 = 21,600 + 9000 V
V = 20.93 s
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