Question

1. A child (mass 25 kg) sleds down a frictionless hill whose vertical drop is 6.2 m. (a) What is the initial potential energy? (b) What is the velocity at the bottom of hill? (c) At the bottom is a level but rough stretch where the coefficient of kinetic friction is 0.31. How far does she slide across the level stretch?

          1. A child (mass 25 kg) sleds down a frictionless hill whose vertical drop is 6.2 m.
(a) What is the initial potential energy?
(b) What is the velocity at the bottom of hill?
(c) At the bottom is a level but rough stretch where the coefficient of kinetic friction is 0.31. How far does she slide across the level stretch?

1. A child (mass 25 kg) sleds down a frictionless hill whose vertical drop is 6.2 m.
(a) What is the initial potential energy?
(b) What is the velocity at the bottom of hill?
(c) At the bottom is a level but rough stretch where the coefficient of kinetic friction is 0.31. How far does she slide across the level stretch?

Added by Taylor B.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Mahendra Kumar

03/05/2022

Step 1

2 m Initial potential energy, PE_initial = mgh = 25 kg * 9.8 m/s^2 * 6.2 m = 1519 J Show more…

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1. A child (mass 25 kg) sleds down a frictionless hill whose vertical drop is 6.2 m. (a) What is the initial potential energy? (b) What is the velocity at the bottom of hill? (c) At the bottom is a level but rough stretch where the coefficient of kinetic friction is 0.31. How far does she slide across the level stretch?