bioser for bsic
(a) Is work a vector or scalar? Define “energy”. A wooden sphere of mass 0.15 kg is thrown
with a velocity of 30 ms-1 .Find the kinetic energy of the sphere. (4-marks )
(b) Define “work” . Write down the unit of work in SI system. A woman push a child, who is
riding a tricycle, with a 200N force. The tricycle moves a distance of 2m and the work done
by the woman is 100J. Find the angle between the force and the displacement. (4-marks )
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