A straight bar, of mass 15 kg and length 2 m, at rest on a frictionles – McqOptions

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1.	A straight bar, of mass 15 kg and length 2 m, at rest on a frictionless horizontal surface, receives an instantaneous impulse of 7.5 Ns perpendicular to the bar. If the impulse is applied at the mid-point of the bar, the energy transferred is
A.	3.2 J
B.	1.9J
C.	3.8 J
D.	2.5 J
Answer» C. 3.8 J

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