At time t = 0 a 2-kg particle has a velocity in m/s of (4 m/s) i - (3 m/s) j. At t = 3 s its velocity is (2 m/s) i+ (3 m/s) j During this time the work done on it was: a. -4 J b. - 40 J c. 12 J d. - 12 J e. 4 J

At time t = 0 a 2-kg particle has a velocity in m/s of (4 m/s) i - (3 m/s) j. At t = 3 s its velocity is (2 m/s) i+ (3 m/s) j During this time the work done on it was: a. -4 J b. - 40 J c. 12 J d. - 12 J e. 4 J

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 32P: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of...

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Question

At time t = 0 a 2-kg particle has a velocity in m/s of (4 m/s) i - (3 m/s) j. At t = 3 s its velocity is (2 m/s) i+ (3 m/s) j During this time the work done on it was:
a. -4 J
b. - 40 J
c. 12 J
d. - 12 J
e. 4 J

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