Question

A block of wood moves a distance 5 cm along a straight line under the action of
force of 2.5 dyne. If the work done is 6.25 erg, the angle which the force makes
with the direction of motion of the body is
(a) 90°
(b) 60°
(c) 45
(d) 30​

Answer 1

Answer:

60^0

Explanation:

w=FScos

cos=w/fs