A 2.60-kg block is moving to the right at 2.20 m/s just before it strikes and sticks to a 1.00-kg block initially at rest. What is the total momentum of the two blocks after the collision? Enter a positive answer if the total momentum is toward right and a negative answer if the total momentum is toward left kg m/s pped Book Print

A 0.50-kg object travelling at +1.00 m/s collides with a 1.50-kg object that is travelling at -1.00 m/s.    They stick together after the collision. What is the final velocity on the combination? Determine the impulses on each to show they follow Newton’s 3rd law. Determine the change in kinetic energy.

6. A 0.60 kg basketball rebounds at a speed of 5.2 m/ sec a.Calculate the balls change in momentum (magnitude and direction) b.Calculate the average force on the ball if the collision lasts 0.12 sec.

A 7400 kg truck traveling along a straight road at 14 m/s comes to a stop and remains stationary for several minutes. It then accelerates backward in reverse until it reaches 5.0 m/s in the opposite direction. What is the magnitude of the change in momentum of the truck for this entire process? A. 100,000 kg. m/s B. 140,000 kg. m/s C. 67,000 kgm/s D. 37,000 kgm/s O C O B OD O A

Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 3.0 x 104 kg (about 30 tons). The rocket engines are shut off, and you're coasting along with a constant velocity of km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of N for 20 s. The ejected gases have a mass that is small compared to the mass of the spacecraft. You then continue coasting with the rocket engines turned off. Where are you an hour later? (Think about what approximations or simplifying assumptions you made in your analysis. Also think about the choice of system: what are the surroundings that exert external forces on your system?) Additional Materials eBook m

A 170 gram billiard ball rolls towards the wall of a billiard table. The ball hits the wall straight on and comes straight back.

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Two toy cars have a collision and bounce off each other. The first has a mass of 0.5 kg and was initially traveling at 3.5 m/s. The second has a mass of 0.8 kg and had an initial velocity of -2.0 m/s. After colliding the first recoils with a velocity of v1f = -1.19 m/s. After colliding, what is the velocity of the second car? 3.5 m/s -2.0 m/s m=0.5kg m=0.8 kg m-0.5kg m-0.8 kg V=? m=0.5kg m=0.8 kg