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

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter17: Energy In Thermal Processes: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 79P

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