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8. A horizontal force of 200 N is applied to a 55-kg cart across a 10-m horizontal skurface. (a) If the cart accelerates at 2 m/s, the work done by the 200 N force is (b) The work done by the force of friction as it acts to slow down the motion of the cart is

8. A horizontal force of 200 N is applied to a 55-kg cart across a 10-m horizontal skurface. (a) If the cart accelerates at 2 m/s, the work done by the 200 N force is (b) The work done by the force of friction as it acts to slow down the motion of the cart is

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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8. A horizontal force of 200 N is applied to a 55-kg cart across a 10-m horizontal skurface. (a) If the cart accelerates at 2 m/s, the work done by the 200 N force is (b) The work done by the force of friction as it acts to slow down the motion of the cart is 9. A rock is thrown straight vertically upward with an initial velocity of 15 m/s. Ignore energy lost to air friction. (a) The rock will rise to a maximum height of _ The velocity of the rock at half that maximum height is (b) 10. A Hooke's law spring is compressed 12 cm from equilibrium and the potential energy stored is 3.6 J. (a) The spring constant in this case is used to launch a mass of 20 gram along a frictionless surface. The "launch speed" of the (b) The spring is then mass is 11 of 11
Transcribed Image Text:8. A horizontal force of 200 N is applied to a 55-kg cart across a 10-m horizontal skurface. (a) If the cart accelerates at 2 m/s, the work done by the 200 N force is (b) The work done by the force of friction as it acts to slow down the motion of the cart is 9. A rock is thrown straight vertically upward with an initial velocity of 15 m/s. Ignore energy lost to air friction. (a) The rock will rise to a maximum height of _ The velocity of the rock at half that maximum height is (b) 10. A Hooke's law spring is compressed 12 cm from equilibrium and the potential energy stored is 3.6 J. (a) The spring constant in this case is used to launch a mass of 20 gram along a frictionless surface. The "launch speed" of the (b) The spring is then mass is 11 of 11
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