During an experiment a 320 g steel puck is moving at 3.8 m/s on a frictionless air table directly east when it hits a stationary 260 g steel puck. After the collision the 260 g puck is moving at 2.7 m/s [75° east of south]. Determine the velocity of the first (320 g) puck after the collision. A 58 kg skier is coasting down a 25 degree slope. Near the top of the slope her speed is 3.6 m/s. She accelerates down the slope due to gravity. A second skier with a mass of 65 kg is standing stationary down the slope 57 m away from the first skier. If the two skiers inelastically collide, what will be their combined velocity at the instant of their collision? This

During an experiment a 320 g steel puck is moving at 3.8 m/s on a frictionless air table directly east when it hits a stationary 260 g steel puck. After the collision the 260 g puck is moving at 2.7 m/s [75° east of south]. Determine the velocity of the first (320 g) puck after the collision. A 58 kg skier is coasting down a 25 degree slope. Near the top of the slope her speed is 3.6 m/s. She accelerates down the slope due to gravity. A second skier with a mass of 65 kg is standing stationary down the slope 57 m away from the first skier. If the two skiers inelastically collide, what will be their combined velocity at the instant of their collision? This

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter8: Momentum And Collisions

Section: Chapter Questions

Problem 47P: A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 25.5 g, which...

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A ball of mass 250 g is thrown with an initial velocity of 25 m/s at an angle of 30 with the horizontal direction. Ignore air resistance. What is the momentum of the ball after 0.2 s? (Do this problem by finding the components of the momentum first, and then constructing the magnitude and direction of the momentum vector from the components.)
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Initially, ball 1 rests on an incline of height h, and ball 2 rests on an incline of height h/2 as shown in Figure P11.40. They are released from rest simultaneously and collide in the trough of the track. If m2 = 4 m1 and the collision is elastic, find an expression for the velocity of each ball immediately after the collision. FIGURE P11.40 Problems 40 and 41.
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Sven hits a baseball (m = 0.15 kg). He applies an average force of 50.0 N. The ball had an initial velocity of 35.0 m/s to the right and a final velocity of 40.0 m/s to the left as viewed by a fan in the stands. a. What is the impulse delivered by Svens bat to the baseball? b. How long is his bat in contact with the ball?
A rocket has total mass Mi = 360 kg, including Mfuel = 330 kg of fuel and oxidizer. In interstellar space, it starts from rest at the position x = 0, turns on its engine at time t = 0, and puts out exhaust with relative speed ve = 1 500 m/s at the constant rate k = 2.50 kg/s. The fuel will last for a burn time of Tb = Mfuel/k = 330 kg/(2.5 kg/s) = 132 s. (a) Show that during the burn the velocity of the rocket as a function of time is given by v(t)=veln(1ktMi) (b) Make a graph of the velocity of the rocket as a function of time for times running from 0 to 132 s. (c) Show that the acceleration of the rocket is a(t)=kveMikt (d) Graph the acceleration as a function of time. (c) Show that the position of the rocket is x(t)=ve(Mikt)ln(1ktMi)+vet (f) Graph the position during the burn as a function of time.
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