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CBSE Class 11-science Answered

what is 2 law of motin
Asked by shreyamishra270304 | 04 Aug, 2021, 08:32: AM
answered-by-expert Expert Answer
Newton's  second Law of motion is expressed  as follows :
 
The rate of change of momentum of a body is directly proportional to the applied force and
takes place in the direction in which the force acts .
 
Momentum of a body is product of mass and velocity
 
Let us assume a body of mass initially moving with velocity vi .
 
If a force F is acting on the body for a time Δt , then its momentum changes .
 
Let us assume velocity of body after applying force vf .
 
Change in momentum = m ( vf - vi )
 
Rate of change of momentum = [ m ( v- v) ] /  Δt 
 
Then according to Newton's second law , force F = [ m ( v- v) ] /  Δt 
Answered by Thiyagarajan K | 04 Aug, 2021, 08:59: AM
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