Question

An 80 N crate slides with constant speed a distance
of 5.0 m downward along a rough slope that makes
an angle of 300 with the horizontal. The work done
by the force of gravity is :
(1) 400 ]
(2) -200 ]
(3) -69 )
(4) 200 )​

Answer 1

Explanation:

none of the above it should be just 40