(a) A force should act on the body and it should have displacement.
(b) Negative.
© P = work/time
(d) Given W = 1960 J, t = 4 min = 4 x 60 = 240 s,
P = ?
P = W/t = 1960/240 = 8.2 W
(a) A force should act on the body and it should have displacement.
(b) Negative.
© P = work/time
(d) Given W = 1960 J, t = 4 min = 4 x 60 = 240 s,
P = ?
P = W/t = 1960/240 = 8.2 W