Show the fbd/figure, given and formula used. A water skier is pulled by a towrope behind a boat. He skies off the side, and the rope makes an angle of 20 degrees with his direction of motion. The tension in the rope is 120N. How much work is done by the skier during a displacement of 500 meters?

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Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a ? = 62.0° slope at constant speed, as shown in the figure. How much work is done (in J) by friction as the sled moves 30.0 m along the hill? How much work is done (in J) by the rope on the sled in this distance? What is the work done (in J) by gravity on the sled? What is the total work done (in J)?

A sled has a total mass of 57 kg and is pushed with a horizontal force from rest. It accelerates at 3.1 m/s? and moves a distance of 93 m on a horizontal surface. The coefficient of kinetic friction between the sled and surface is 0.28. Find the work done by the pushing force. Round your final answer to a whole number.

A fisherman reels in 14.0 m of line while landing a fish, using a constant forward pull of 20.0 N. How much work does the tension in the line do to the fish?

The two ropes seen in the figure are used to lower a 255 kg piano exactly 6 m from a second-story window to the ground. How much work is done by w (with an arrow to the right)?Express your answer in joules. How much work is done by T1 (with an arrow to the right)?Express your answer in joules.

While riding on an elevator, a person has twoforces acting on him, a normal force and a gravity force. Suppose the person has mass m is on an elevator that 1 descends a distance d. If the total work on the person is Wiotal = -mgd, what is 4 the magnitude of the normal force? Is the elevator speeding up or slowing down? The knowns in this problem are m and g.

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You drop a 1.50 kg book to a friend who stands on the ground at distance D= 12.0 m below. If your friend's outstretched hands are at distance d = 1.30 mabove the ground (see the figure), (a) how much work W, does the gravitational force do on the book as it drops to her hands? (b) What is the change AU in the gravitational potential energy of the book-Earth system during the drop? If the gravitational potential energy Uof that system is taken to be zero at ground level, what is U (c) when the book is released and (d) when it reaches her hands? Now take U to be 100 J at ground level and again find (e) W, (f)AU. (g) U at the release point, and (h) U at her hands. (a) Number Units (b) Number Units (c) Number Units (d) Number Units (e) Number Units (f) Number Units (g) Number Units (h) Number Units >

A golfer hit a 40.71 gram golf ball from the fairway giving it an initial velocity of 37.3 m/s.  It lands on the green, which is at the same elevation as the fairway, and strikes the ground with a final velocity of 16.1 m/s.  What is the work (in J) done on the ball by the non-conservative friction forces