The velocity of a body of mass 5kg reduces from 10m/s to 5m/s. what is the change in momentum of the body.
Answers
Answered by
19
Here
U=10m/s
V=5m/s
M=5kg
Initial momentum= m×u
5×10= 50
Final momentum=m×v
5×5=25
Change in momentum
Initial momentum-final momentum
= 50-25
= 25
Therefore change in momentum is 25.
May be it will help you
U=10m/s
V=5m/s
M=5kg
Initial momentum= m×u
5×10= 50
Final momentum=m×v
5×5=25
Change in momentum
Initial momentum-final momentum
= 50-25
= 25
Therefore change in momentum is 25.
May be it will help you
Answered by
6
Change in momentum of body is -25 kg m/s
Explanation
Given that the velocity of a body of mass 5kg reduces from 10m/s to 5m/s.
We have to find change in momentum of body.
Solution
Now we have ;
- Mass of body (M) = 5 kg
- Initial velocity of body (u) = 10 m/s
- Final velocity of body (v) = 5 m/s
As we know formula :-
→ Initial momentum (p) = m * u
→ Initial momentum (p) = 5 * 10
→ Initial momentum (p) = 50 kg m/s
__________________________
__________________________
Now again,
→ Final momentum (p') = m * v
→ Final momentum (p') = 5 * 5
→ Final momentum (p') = 25 kg m/s
__________________________
__________________________
Now change in momentum of body :-
→ Change in momentum = p' - p
→ Change in momentum = 25 - 50
→ Change in momentum = -25 kg m/s
Hence,
Change in momentum of body = -25 kg m/s
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