A 25 g ball is released from rest 80 m above the surface of Earth. During the fall the total internal energy of the ball and air increases by 15 J. What is the velocity of the ball in m/s just before it hits the surface? (Assume that the air resistance force is constant during the movement and g=10 m/s) Option1 Option2 Option3 Option4 Option5 20 30 36 40 44

A 25 g ball is released from rest 80 m above the surface of Earth. During the fall the total internal energy of the ball and air increases by 15 J. What is the velocity of the ball in m/s just before it hits the surface? (Assume that the air resistance force is constant during the movement and g=10 m/s) Option1 Option2 Option3 Option4 Option5 20 30 36 40 44

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter11: Energy In Thermal Processes

Section: Chapter Questions

Problem 13P: A certain steel railroad rails 13 yd in length and weighs 70.0 lb/yd How much thermal energy is...

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