Question

Q no: 54
A block of mass 1kg moving with a speed of
4ms-1, collides with another block of mass
2kg which is at rest. The lighter block comes
to rest after collision. The loss in KE of the
system is
-A)
81​

Answer 1

Answer:

see up.............................

Answer 2

Answer:

loss in K.E. is 4J because after collision 2 kg moves with 2m/s and its k.e.is 4 initially it was 8 J