kmann
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A 900 kg car is traveling west at 25 m/s. An SUV with a mass of 1,500 kg is traveling at 10 m/s east, heading straight for the car. The car and SUV collide and stick together.
A.) Momentum of the car before collision=
B.) Momentum of SUV before collision=
C.) Determine the speed of the car and SUV after the collision.



Answer :

Hippalectryon
'c' is for car, 's' is for SUV.

A) Pc=Vc*Mc=25*900=22'500 Kg*m/s

B) Ps=Vs*Ms=1500*(-10)=-15000 Kg*m/s

C) after the collision : P=Ps+Pc=22500-15000=7500 Kg*m/s hence its speed it V=P/M=P/(Mc+Ms)=7500/(1500+900))=3.125 m/s

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