3. A 1.5kg book is sliding along a horizontal surface. At point A, it is moving at 3.21m/s, and at point B it has slowed to 1.25m/s. a. How much work was done on the book between A and B? b. Suppose the book continues its motion and -0.750 Joules of work is done on the book from point B to C. How fast is it moving at point C?

3. A 1.5kg book is sliding along a horizontal surface. At point A, it is moving at 3.21m/s, and at point B it has slowed to 1.25m/s. a. How much work was done on the book between A and B? b. Suppose the book continues its motion and -0.750 Joules of work is done on the book from point B to C. How fast is it moving at point C?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter5: Energy

Section: Chapter Questions

Problem 27P: The chin-up is one exercise that can be used to strengthen the biceps muscle. This muscle can exert...

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In 1990, Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using only his teeth. (a) How much work was done on the object by Arfeuille in this lift, assuming the object was lifted at constant speed? (b) What total force was exerted on Arfeuilles teeth during the lift?
A couple of soccer balls of equal mass are kiched off the ground at the same speed but at different angles. Soccer ball A is kicked off at an angle slightly above the horizontak, whereas boll B is kicked slightly below the vertical. How do each of the following compare for ball Aand ball B? (a) The initial kinetic energy and (b) the change in gravitational potential energy from the ground to the highest point? If the energy in part (a) differs from part (b), explain why there is a differenne between the two energies.
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. At NASA's Zero Gravity Research Facility in Cleveland, Ohio, experimental payloads fall freely from rest in an evacuated vertical shaft through a distance of 132 m, (a) If a particular payload has a mass of 45 kg, what is its potential energy relative to the bottom of the shaft? (b) How fast will the payload be traveling when it reaches the bottom of the shaft? Convert your answer to mph for a comparison to highway speeds.
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