A particle which is experiencing a force, is given by \(\;F = 3\hat i

1.	A particle which is experiencing a force, is given by \(\;F = 3\hat i - 12\hat j\), undergoes a displacement of \(\;d = 4\hat i\). If the particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement?
A.	9 J
B.	15 J
C.	12 J
D.	10 J
Answer» C. 12 J

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A particle which is experiencing a force, is given by \(\;F = 3\hat i - 12\hat j\), undergoes a displacement of \(\;d = 4\hat i\). If the particle had a kinetic energy of 3 J at the beginning of the displacement, what is its kinetic energy at the end of the displacement?

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