Q.1 Ans. is C, plz explain. Kinetic cncrgy. With any reference, must be
(a) negati'.e
posltl'.e
(b) cero
both (b) and (c).
(1994)
A body of mass 5 kg is raised vertically to a
height of 10 m by a force of 170 N. lhe velocity
Ya kinetic energy can't be negative with any reference.It must be zero or positive.As K.E is half of mass multiplied velocity square, mass is a scaler that can't be negative and due to square on velocity it always remain positive. Hope it helps.....
