Problem 7.38 Assume that the maximum horizontal distance you can throw a basebal (m-0.145 kg) at an angle of - 45 above the horizontal is 25 m • Part A What is the kinetic energy of the basebal just after it leaves hand? ignore air resistance and the small distance the bal is above the ground when it leaves your hand. Take the zero of potential energy to be at the ground. Exprese your anewer with the appropriate units. O IE ? Value Units Submit • Part B A the ball's maximum height, what fraction of its total mechanical energy is kinetic energy and what fraction is gravitational potential enengy? Enter your answera numerically separated by a comma. O IE K/E. U,/E - Submit sunstAnser • Part C f you throw the basebal at an initial angle of 60 above the horizontal, at its maximum height what fraction of its total energy is kinetic energy and what fraction is gravitational potential energy? Enter your anewera numertcally separated by a comma. O IB K/E U,/E• Submit Aecunst Anewer • Part D What fraction of the total mechanical enengy is kinetic energy at the maximum height in the limiting cases of a0 and as0 Enter your answera numerically separated by a comma. K/E,-r. K/E,- Submit nstanser

Problem 7.38 Assume that the maximum horizontal distance you can throw a basebal (m-0.145 kg) at an angle of - 45 above the horizontal is 25 m • Part A What is the kinetic energy of the basebal just after it leaves hand? ignore air resistance and the small distance the bal is above the ground when it leaves your hand. Take the zero of potential energy to be at the ground. Exprese your anewer with the appropriate units. O IE ? Value Units Submit • Part B A the ball's maximum height, what fraction of its total mechanical energy is kinetic energy and what fraction is gravitational potential enengy? Enter your answera numerically separated by a comma. O IE K/E. U,/E - Submit sunstAnser • Part C f you throw the basebal at an initial angle of 60 above the horizontal, at its maximum height what fraction of its total energy is kinetic energy and what fraction is gravitational potential energy? Enter your anewera numertcally separated by a comma. O IB K/E U,/E• Submit Aecunst Anewer • Part D What fraction of the total mechanical enengy is kinetic energy at the maximum height in the limiting cases of a0 and as0 Enter your answera numerically separated by a comma. K/E,-r. K/E,- Submit nstanser

Name: what's the answer of part a , b ,c and d Problem 7.38Assume that the m
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Description: what's the answer of part a , b ,c and d Problem 7.38Assume that the maximum horizontal distance youcan throw a baseball (TM = 0.145 kg) at an angle ofm = 45° above the harizantal is 25 m.• Part AWhat is the kinetic energy of the baseball just after

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 108CP: Consider a linear spring, as in Figure 7.7(a), with mass M uniformly distributed along its length....

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Similar questions

In an amusement park, a car rolls in a track as shown below. Find the speed of the car at A, B, and C. Note that the work done by the rolling friction is zero since the displacement of the point at which the rolling friction acts on the tires is momentarily at rest and therefore has a zero displacement.
The surface of the preceding problem is modified so that the coefficient of kinetic friction is decreased. The same horizontal force is applied to the crate, and after being pushed 8.0 m, its speed is 5.0 m/s. How much work is now done by the force of friction? Assume that the crate starts at rest.
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Give an example of something think of as work in everyday circumstances that is not work in the scientific sense. Is energy transferred or changed in form in your example? If so, explain how this without doing work.
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a shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 below the horizontal. The force is just sufficient to overcome various frictional forces, so the cart moves at constant speed, (a) Find the work done by the shopper as she moves down a 50.0-m length aisle, (b) What is the net work done on the cart? Why? (c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forces doesnt change, would the shoppers applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?
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