1.

2)The momentum of a body of mass 5 kg is 10 kgm/s , then its velocity will be​

Answer»

Answer:

4.4 Joule

Explanation:

Change in momentum, Δp=F.t=0.2×10=2

Initial value of velocity =

5

10

=2m/sec

Initial ENERGY =

2

1

×5×2×2=10J

Total FINAL momentum =10+2=12kgm/sec

Final velocity =

5

12

m/sec

Final energy =

2

1

×5×

5

12

×

5

12

=

5

72

=14.4J

Change in energy =14.4−10=4.4joule



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