Question

10 A coolie lifts a luggage of 10 kg from the ground and pur
it on his head 18 m above the ground. The work done by
him on the luggage is
(a) 180J
(b) 220)
(c) 100 J
(d) 480
11. A student carries a bag weighing 5 kg from the ground
floor to his class on the first floor that is 2 m high. The
work done by the boy is
(a) 1
(b) 10
(d) 100
(d) 1000 J.
12. A person pulls a body on a horizontal surface by applying
a force of 5.0 N. Find the work done by this force in
displacing the body through 2.0 m.
(a) *10J
(b) 15 )
(c) zero
(d) 5)
13. The work done by a weight of 1 kg mass when it moves Up
through 1 mis
(a) 103
(b) -10
(C) 0.1)
(d) -0.1.
4. A ball of mass 1 kg thrown upwards reaches a maximum
height of 5.0 m. Calculate the work done by the force of
gravity during this vertical displacement.
(a) 49 J
(b) 49)
(c) 5.0 N
(d) -5.0 N​

Answer 1

ek ek krke pucho yrr ab batae kaise ..........