P (N)20WE-4 A 3.00kg block is initially sliding to the right ona frictionless surface at 7.00m/s. Force P isdirected to the left and is applied to the blockcontinuously starting at the initial position asshown below. The magnitude of P variesaš shown in the graph to the right.V=7.00m/s15105X0 1 234 (m)a).Find the magnitude of the work done by the force P as the block moves from x=0 to x-4m.b) Find the kinetic energy of the block at x=4m. Neglect air resistance (and the surface is frictionless).c) Find the speed of the block at x=4m.

Solution: Mass of block , m=3Kginitial speed , Vi=7m/smagnitude of P Vaxis as time

E-4 A 3.00kg block is initially sliding to the right on a frictionless surface at 7.00m/s. Force P is directed to the left and is applied to the block continuously starting at the initial position as shown below. The magnitude of P varies aš shown in the graph to the right. V=7.00m/s 20 15 10 5 P X 1 3 4 (m) a).Find the magnitude of the work done by the force P as the block moves from x=0 to x=4m. b) Find the kinetic energy of the block at x=4m. Neglect air resistance (and the surface is frictionless). c) Find the speed of the block at x=4m. 2.

E-4 A 3.00kg block is initially sliding to the right on a frictionless surface at 7.00m/s. Force P is directed to the left and is applied to the block continuously starting at the initial position as shown below. The magnitude of P varies aš shown in the graph to the right. V=7.00m/s 20 15 10 5 P X 1 3 4 (m) a).Find the magnitude of the work done by the force P as the block moves from x=0 to x=4m. b) Find the kinetic energy of the block at x=4m. Neglect air resistance (and the surface is frictionless). c) Find the speed of the block at x=4m. 2.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 103AP: Three skydivers are plummeting earthward. They are initially holding onto each other, but then push...

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