Question

Q4. Momentum of a body increases from 20kgm/s to 40kgm/s in 5 seconds, then the forceapplied isA) 4 Nb)-4 Nc)12 Nd)-12 Nguys plzz ans me...​

Answer 1

Answer

Force is defined as change in momentum per change in time

$\rm :\to F=\dfrac{\Delta P}{\Delta t}\\\\\rm :\to F=\dfrac{40-20}{5}\\\\\rm :\to F=\dfrac{20}{5}\\\\:\to \rm F=4\ N$

So , option A is correct