29. A unit for gravitational potential energy is the (1) watt (2) joule (3) newton (4) kilogram . meter/ second 30. Which mass has the greatest gravitational potential energy with respect to the floor? (1) a 50.-kg mass resting on the floor (2) a 2.0-kg mass 10. m above the floor (3) a 10.-kg mass 2.0 m above the floor (4) a 6.0-kg mass 5.0 m above the floor

29. A unit for gravitational potential energy is the (1) watt (2) joule (3) newton (4) kilogram . meter/ second 30. Which mass has the greatest gravitational potential energy with respect to the floor? (1) a 50.-kg mass resting on the floor (2) a 2.0-kg mass 10. m above the floor (3) a 10.-kg mass 2.0 m above the floor (4) a 6.0-kg mass 5.0 m above the floor

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter28: Special Relativity

Section: Chapter Questions

Problem 13PE: How fast would a 6.0 m-long sports car have to be going past you in order for it to appear only 5.5...

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How fast would a 6.0 m-long sports car have to be going past you in order for it to appear only 5.5 m long?
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