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23. In one instance, an object (m = 4.0 kg) was located 3.0 m above the ground, and was freely-falling 5.0 m/s downward. What were the gravitational potential, kinetic, and total mechanical energies of the said object, respectively? U = 36.0 J; K= 196.0 J; E = 67.6 J U = 196.0 J; K = 36.0 J; E = 67.6 J O U=117.6 J; K= 50.0 J; E = 167.6 J OU 100.0 J; K= 117.6 J; E = 167.6 J 24. An ideal roller coaster (m= 1000 kg) is 30 m above the ground while. moving at a speed of 70 m/s. What is its total mechanical energy? 294 000 J O 1 140 000 J O2 140 000 J O 2 744 000 J

23. In one instance, an object (m = 4.0 kg) was located 3.0 m above the ground, and was freely-falling 5.0 m/s downward. What were the gravitational potential, kinetic, and total mechanical energies of the said object, respectively? U = 36.0 J; K= 196.0 J; E = 67.6 J U = 196.0 J; K = 36.0 J; E = 67.6 J O U=117.6 J; K= 50.0 J; E = 167.6 J OU 100.0 J; K= 117.6 J; E = 167.6 J 24. An ideal roller coaster (m= 1000 kg) is 30 m above the ground while. moving at a speed of 70 m/s. What is its total mechanical energy? 294 000 J O 1 140 000 J O2 140 000 J O 2 744 000 J

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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SUBJECT : GENERAL PHYSICS 2

TOPIC : LAW OF CONSERVATION OF ENERGY 

23. In one instance, an object (m = 4.0 kg) was located 3.0 m above the ground, and was freely-falling 5.0 m/s downward. What were the gravitational potential, kinetic, and total mechanical energies of the said object, respectively? U = 36.0 J; K = 196.0 J; E = 67.6 J O U=196.0 J; K= 36.0 J; E = 67.6 J O U = 117.6 J; K = 50.0 J; E = 167.6 J O U = 100.0 J; K= 117.6 J; E = 167.6 J 24. An ideal roller coaster (m= 1000 kg) is 30 m above the ground while moving at a speed of 70 m/s. What is its total mechanical energy? 294 000 J O 11 1 140 000 J O 2 140 000 J O 2 744 000 J
Transcribed Image Text:23. In one instance, an object (m = 4.0 kg) was located 3.0 m above the ground, and was freely-falling 5.0 m/s downward. What were the gravitational potential, kinetic, and total mechanical energies of the said object, respectively? U = 36.0 J; K = 196.0 J; E = 67.6 J O U=196.0 J; K= 36.0 J; E = 67.6 J O U = 117.6 J; K = 50.0 J; E = 167.6 J O U = 100.0 J; K= 117.6 J; E = 167.6 J 24. An ideal roller coaster (m= 1000 kg) is 30 m above the ground while moving at a speed of 70 m/s. What is its total mechanical energy? 294 000 J O 11 1 140 000 J O 2 140 000 J O 2 744 000 J
25. A 3-kg box was dropped from a height of 12.0 m. Assuming no air friction, what is its speed when it hits the ground? 1.7 m/s 4.9 m/s 10.8 m/s O 15.3 m/s
Transcribed Image Text:25. A 3-kg box was dropped from a height of 12.0 m. Assuming no air friction, what is its speed when it hits the ground? 1.7 m/s 4.9 m/s 10.8 m/s O 15.3 m/s
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