Question

If a body having mass 40kg started moving initially with rest and it takes a velocity of 20m/sec in time 4 seconds. Find the value of force​.​​​

Answer 1

Answer:

${\mathfrak{\underline{\purple{\:\:\: Given:-\:\:\:}}}}$

$\:\:\:\:\bullet\:\:\:\sf{Mass \ of \ the \ body \ (m) = 40 \ kg.}$

$\:\:\:\:\bullet\:\:\:\sf{Final \ velocity \ of \ the \ body \ (v) = 20 \ m/s.}$

$\:\:\:\:\bullet\:\:\:\sf{Initial \ velocity \ of \ the \ body \ (u) = 0.}$

${\mathfrak{\underline{\purple{\:\:\:To \:Find:-\:\:\:}}}}$

$\:\:\:\:\bullet\:\:\:\sf{Force \ exerted \ by \ the \ body \ ( F).}$

${\mathfrak{\underline{\purple{\:\:\: Solution:-\:\:\:}}}}$

☯ Using 1st equation of motion

$\dashrightarrow\:\: \sf{v = u + at.}$

$\dashrightarrow\:\: \sf{20 = 0 + a(4).}$

$\dashrightarrow\:\: \sf{20 = 4a.}$

$\dashrightarrow\:\: \sf{\dfrac{\cancel{20}}{\cancel{4}} = a.}$

$\dashrightarrow\:\: \sf{a = 5.}$

☯ Now, Finding the force exerted

$\dashrightarrow\:\: \sf{F = ma.}$

$\dashrightarrow\:\: \sf{F = 40 \times 5.}$

$\dashrightarrow\:\: \sf{F = 200 \ N.}$

☯ Hence,

$\:\:\:\:\star\:\:\:\sf{The \ force \ exerted \ by \ the \ body \ is \ 200N.}$

Answer 2

Answer:

• She Is comforted By Her.