Question

and plz help me with this also​

Answer 1

Answer:

Let v be the common velocity.

Applying conservation of momentum

2×10+3×0=(2+3)v

v=

5

10×2

=4m/sec

[36km/hour=10m/sec]

Initial Energy =

2

1

×2×(10)

2

+0=100J

Final Energy =

2

1

×5×4×4=40J

Loss of energy =100−40=60 joule