A block of mass 10 Kg accelerates from rest to a velocity of 20 m/s in – McqOptions

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1.	A block of mass 10 Kg accelerates from rest to a velocity of 20 m/s in 5s under the influence of an external force. What is the work done by the external force?
A.	2000 J
B.	-2000 J
C.	20000 J
D.	-20000 J
Answer» B. -2000 J

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