Question

A body of mass 2kg moving on a horizontal surface with an initial velocity 4m/so comes to rest after moving on the same surface with a velocity of 4m/s ,the force needed is

Answer 1

$here \: is \: your \: answer$
mass= 2g

f= ?

》using the formula ,

v=u+at

or a=v-u/t

given acceleration to the body,

=(0-4)/2 = -2m/s

De acceleration=2m/s

force which provided the de-acceleration,

F = ma

=》2x2= 4N


》this force is to be opposed

hence ,

$a \: force \: of \: 4N \: is \: required \: to \: keep \: the body \: moving \: with \: velocity \: of \: 4m/s.$

$hope \: it \: helps$

$\beta e \: \beta \gamma \alpha inly$

Answer 2

Explanation:

ereisyouranswer

mass= 2g

f= ?

》using the formula ,

v=u+at

or a=v-u/t

given acceleration to the body,

=(0-4)/2 = -2m/s

De acceleration=2m/s

force which provided the de-acceleration,

F = ma

=》2x2= 4N

》this force is to be opposed

hence