
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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The horse exerts a backward force of 2645N for a forward distance of 25m. How much work is done?
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- A 7.8 kg box is pushed sideways with a force whose magnitude is 353 N. When the box has slid 0.2 m, how much work (in joules) did the push do?arrow_forwardA crane lifts a 650 kg beam vertically upward 6.6 m and then swings it westward 18 m. How much work does the crane do? Neglect any friction and assume the crane moves with constant speed Answer: Choose...arrow_forwardA 4 kg crate sitting on a horizontal surface is pushed 30 m by a force of 6N applied at an angle of 27o below the horizontal. How much work is done? If it takes 7.8 seconds to push the crate, how much power was expended?arrow_forward
- A weight lifter lifts a 310 - N set of weights from ground level to a position over his head, a vertical distance 2.00 m. How much work does the weight lifter do weights at constant speed?arrow_forwardA crane pulls a 700 kg box at a constant velocity straight up for a distance of 50 m. Calculate the work done by the crane.arrow_forwardAn object moves a distance 71 m when a force of 54 N is applied in that same direction. Calculate the work done by the force on the object as it moves. W = O Search CO J B.arrow_forward
- Tom used 100N of force to drag a 10kgs of rocks up a 15 degree hill. There is an initial velocity of 1.5 m/s. The coefficient of kinetic friction is 0.40 and the rocks is dragged 7.5m. Find the work done in gravity? The work done by friction? The work done by Tom? The change in KE? The speed of the rocks after it is dragged 7.5m?arrow_forwardA tugboat exerts a constant force of 5000N on a ship moving at constant speed through a harbour. How much work does the tugboat do on the ship in a distance of 3.00km?arrow_forwardA 51 kg boy on a skate board traveling to the east with a speed of 9.9 m/s. After crossing a gravel area, his speed decreases to 1.7 m/s. Calculate the net work in joules done to the boy.arrow_forward
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