A body of mass 2 Kg, initially at rest, moves under the influence of an external force of magnitude 4 N on plane ground. What is the work done by the force and the change in kinetic energy in the first 10 seconds?

A body of mass 2 Kg, initially at rest, moves under the influence of

1.	A body of mass 2 Kg, initially at rest, moves under the influence of an external force of magnitude 4 N on plane ground. What is the work done by the force and the change in kinetic energy in the first 10 seconds?
A.	400 J, 400 J
B.	-400 J, 400 J
C.	400 J, -400 J
D.	-400 J, -400 J
Answer» B. -400 J, 400 J

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A body of mass 2 Kg, initially at rest, moves under the influence of an external force of magnitude 4 N on plane ground. What is the work done by the force and the change in kinetic energy in the first 10 seconds?

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