10. When an object doubles its speed, the kinetic energy increases by a factor ofa.1C.2e.4b.6d. 811. If the mass of a car is doubled and its speed is cut in half, then the kinetic energy changes by a factor ofa.0.25C.e.0.51b. 2d. 412. Two marbles of the same mass collide head-on. The first marble moves at 11 cm/s to the right. Thesecond marble moves at 18 cm/s to the left. After the collision, the first marble moves at 16 cm/s to theleft. What is the velocity of the second marble?a. 23 cm/s [right]b.16 cm / s [left]C.9.0 cm/s [right]d. 11 cm/s [left]

Answered: Image /qna-images/answer/1486d14c-237b-4270-afbc-8cc869d0953c.jpg

Answered: 10. When an object doubles its speed,…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter6: Momentum And Collisions

Section: Chapter Questions

Problem 3P: A pitcher claims he can throw a 0.145-kg baseball with as much momentum as a 3.00-kg bullet moving...

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A mother pushes her son in a stroller at a constant speed of 1.52 m/s. The boy tosses a 56.7-g tennis ball straight up at 1.75 m/s and catches it. The boys father sits on a bench and watches. a. According to the mother, what are the balls initial and final momenta? b. According to the father, what are the balls initial and final momenta? c. According to the mother, is the balls momentum ever zero? If so, when? If not, why not? d. According to the father, is the balls momentum ever zero? If so, when? If not, why not?
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A particle is suspended from a post on top of a can by a light string of length L. as shown in Figure P9.57a. The can and particle are initially moving to the right at constant speed the with the string vertical. The can suddenly comes to rest when it runs into and sticks to a bumper as shown in Figure P9.57b. The suspended panicle swings through an angle . (a) Show that the original speed of the cart can be computed from. vi=2gL(1cos) (b) If the bumper is still exerting a horizontal force on the cart when the hanging panicle is at its maximum angle forward from the vertical. at what moment does the bumper stop exerting a horizontal force?
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Figure P9.59a shows an overhead view of the configuration of two pucks of mass In on frictionless ice. The pucks are tied together with a string of length 1' and negligible mass. At time t = 0, a constant force of magnitude F begins to pull to the right on the center point of the string. At time t, the moving pucks strike each other and stick together. At this time, the force has moved through a distance 4 and the pucks have attained a speed v (Fig. P9.59b). (a) What is v in terms of F, d, e, and in? (b) How much of the energy transferred into the system by work done by the force has been transformed to internal energy?

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