CBSE Class 11-science Answered
what is 2 law of motin
Asked by shreyamishra270304 | 04 Aug, 2021, 08:32: AM
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 ( vf - vi ) ] / Δt
Then according to Newton's second law , force F = [ m ( vf - vi ) ] / Δt
Answered by Thiyagarajan K | 04 Aug, 2021, 08:59: AM
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