WHITE HIZLA1.) A boy has a weight of 500 N and can run up a flight of stairs in 10 s. There are30 steps and each of them has a height of 16 cm. Calculate the boy's power.2.) A ball with a mas of 0.3 kg is dropped from the top of a building whose height is300 m.A.) What is the velocity of the ball as it hits the ground?B.) What is the ball's total mechanical energy (TE) upon releasing it?C.) What is the ball's total mechanical energy as it strikes the ground?3.) A farmer hitches his tractor to a sled loaded with firewood and pulls it a distanceof 20 m along a level ground. The total weight of the sled and load is 14,700 N. Thetractor exerts a constant 6,000 N force at an angle 36.9 degrees above the horizontalto pull the load. Find the work done by the tractor.4.) A 2.27 kg sack of flour is lifted vertically at a constant speed of 4 m/s through aheight of 12 m.A.) How great a force is required to lift the sack?B.) How much work is done on the sack by lifting the force?5.) Which has more kinetic energy, a bullet of mass 0.02 kg travelling at a speed of300 m/s or an 800-kg car moving at a speed of 25 m/s?

Name: WHITE HIZLA1.) A boy has a weight of 500 N and can run up a flight of
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Description: WHITE HIZLA1.) A boy has a weight of 500 N and can run up a flight of stairs in 10 s. There are30 steps and each of them has a height of 16 cm. Calculate the boy's power.2.) A ball with a mas of 0.3 kg is dropped from the top of a building whose hei

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Answered: 1.) A boy has a weight of 500 N and can…

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1.) A boy has a weight of 500 N and can run up a flight of stairs in 10 s. There are 30 steps and each of them has a height of 16 cm. Calculate the boy's power. ۱۱۸۱

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter3: Energy And Conservation Laws

Section: Chapter Questions

Problem 39P: . In the annual Empire State Building race, contestants run up 1,575 steps to a height of 1,050 ft....

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