Question

41. A block of mass 10 kg is moving on a rough surface as shown in figure. The frictional force acting on block is
v = 4 m/s
46. B
F = 20 N
u = 0.6
(1) 20 N
(3) 40 N
(2) 60 N
(4) 80 N​

Answer 1

Answer:

41 answer 40kgm/s

42 answer 20N