science

A car of mass 2900 kg collides with a truck of mass 4800 kg, and just after the collision the car and truck slide along, stuck together. The car's velocity just before the collision was < 34, 0, 0 > m/s, and the truck's velocity just before the collision was < -18, 0, 28 > m/s

(a) What is the velocity of the stuck-together car and truck just after the collision?

  1. 👍 0
  2. 👎 0
  3. 👁 576
asked by sara
  1. just conserve momentum:

    2900<34,0,0> + 4800<-18,0,28> = (2900+4800)v
    <98600,0,0>+<-86400,0,134400> = 7700v
    <12200,0,134400> = 7700v
    v = <1.58,0,17.45>

    1. 👍 0
    2. 👎 0
    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What

    asked by Joe on March 12, 2014
  2. Physics

    A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What

    asked by Joe on March 8, 2014
  3. Physics

    A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What

    asked by Joe on March 10, 2014
  4. math

    A large truck with a mass of 6500·kg and going 20·m/s east collides with a car whose mass is 1100·kg and which is at rest. If the impulse exerted on the car by the truck is 12000·N·s east, find the impulse exerted by the car

    asked by jen on October 27, 2011
  5. physics

    A 1200.0kg car is moving east at 30.0 m/s and collides with a 3600.0 kg truck moving at 20 m/s in a direction 60 degrees north of east.The vehicles interlock and move off together.Find their common velocity. Use the law of

    asked by fluffy on September 23, 2006
  1. Physics

    A toy car mass 0.05 kg ,on a ramp with no friction , begins at 0.7 meters high. At the bottom it collides inelastically with a toy truck mass 0.2 kg, at rest. After the collision the car is at rest, what is the final velocity of

    asked by L on October 26, 2017
  2. Physics. PLEASE HELP!!

    A small car of mass 985 kg is parked behind a small truck of mass 1551 kg on a level road. The brakes of both the car and the truck are off so that they are free to roll with negligible friction. A 83 kg woman sitting on the

    asked by Amber on April 7, 2012
  3. physics

    A 1400 kg car traveling at 15.5 m/s to the south collides with a 4100 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What is the final velocity of the

    asked by Anonymous on April 19, 2013
  4. Physics

    A 1500 kg car traveling at 17.6 m/s to the south collides with a 5000 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What is the final velocity of the

    asked by Angel on January 22, 2012
  5. Don't get scared when you hear the word Physics!

    A 1500 kg car traveling at 16.0 m/s to the south collides with a 5100 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What is the final velocity of the

    asked by Just help please. Homework due in 4 hours on January 17, 2013

More Similar Questions