A 5.75-kg object passes through the origin attime t = 0 such that its x component of velocity is 5.00 m/s and its y component of velocity is - 3.00 m/s. (a) What is the kinetic energy of the object at this time? (b) At a later time t = 2.00 s, the particle is located at x = 8.50 m and y = 5.00 m. What constant force acted on the object during this time interval? (c) What is the speed of the particle at t 5= 2.00 s? Answer :
A 5.75-kg object passes through the origin attime t = 0 such that its x component of velocity is 5.00 m/s and its y component of velocity is - 3.00 m/s. (a) What is the kinetic energy of the object at this time? (b) At a later time t = 2.00 s, the particle is located at x = 8.50 m and y = 5.00 m. What constant force acted on the object during this time interval? (c) What is the speed of the particle at t 5= 2.00 s? Answer :
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
Chapter6: Energy Of A System
Section: Chapter Questions
Problem 37P
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A 5.75-kg object passes through the origin attime t = 0 such that its x component of velocity is 5.00 m/s and its y component of velocity is - 3.00 m/s.
(a) What is the kinetic energy of the object at this time?
(b) At a later time t = 2.00 s, the particle is located at x = 8.50 m and y = 5.00 m. What constant force acted on the object during this time interval?
(c) What is the speed of the particle at t 5= 2.00 s?
Answer :
(a) 97.8 J
(b) ( - 4.31 i + 31.6 j ) N
(c) 8.73 m/s
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