suppose that each vehicle is initially moving at 8.0 m/s and that they undergo a
ID: 2190862 • Letter: S
Question
suppose that each vehicle is initially moving at 8.0 m/s and that they undergo a perfectly inelastic head-on collision. (In an inelastic collision, the two objects move together as one object after the collision.) Each driver has a mass of 90.0 kg. Including the drivers, the total vehicle masses are 890 kg for the car and 4090 kg for the truck. The collision time is 0.160 s. Choose coordinates such that the truck is initially moving in the positive x direction, and the car is initially moving in the negative x direction. (a) What is the total x-component of momentum BEFORE the collision? (b) What is the x-component of the CENTER-OF-MASS velocity BEFORE the collision? (c)What is the total x-component of momentum AFTER the collision? (d) What is the x-component of the final velocity of the combined truck-car wreck?Explanation / Answer
a) 4090 x 8 - 890 x 8 = 25600 Kg-m/s b) 5.14 m/s .... 25600/(890 + 4090) c) remain same , 25600 kg-m/s d) 5.14 m/s
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