Question

The physical quantity which is equal to the rate of change of momentum isi) displacement ii) acceleration iii) force iv) impulseTNSCERT Class 10 Physics Ch 15 Laws of Motivation and Gravitation

Answer 1

from Newton's 2nd law of motion :-
rate of change of momentum per unit time is known as force .

eg F = m( Vf - Vi)/∆t

F = ∆P/∆t

now, ∆P= F.∆t

hence, change in momentum is equal to product of force and change In time .
this is what ???
yeah !!! impulse , becoz impulse is product of force and change of time .

hence option ( IV) is correct