Recent content by sloanmp

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    How Much Kinetic Energy is Stored in the Spring After a Collision?

    A ball of mass 0.25 kg is fired with velocity 120 m/s into the barrel of a spring gun of mass 1.8 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. No energy is lost to friction. What fraction of the ball's initial...
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    What was the speed of the Camaro after colliding with an Escort?

    An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass of 1300 kg and a speed of 35 km/h in the positive x direction before the collision. The Camaro has a mass of 1500 kg and was traveling in the positive y direction. After the collision, the two move...
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    Rocket Exhaust Gases: Initial & After 29s Acceleration

    A rocket with initial mass of 7.30×103 kg is fired in the vertical direction. Its exhaust gases are ejected at the rate of 6.00×101 kg/s with a relative velocity of 2.100×103 m/s. What is the initial acceleration of the rocket? What is the acceleration after 29 s have elapsed?