A men weighing 90kg carries a stone of 20 kg to the top of the building 30m high. The work done by hint is (g = 9.8 m/s2)
A. 80 J
B. 100 J
C. 980 J
D. 29,400 J
Answer:D
A men weighing 90kg carries a stone of 20 kg to the top of the building 30m high. The work done by hint is (g = 9.8 m/s2)
A. 80 J B. 100 J C. 980 J D. 29,400 J