Question

A body of mass 500 g, initially at rest, is acted upon by a force which causes it to move a distance of 4 m in 2 s. Calculate the force applied.

Answer 1

ʜᴇʟʟᴏ ᴍᴀᴛᴇ!

First we will apply second equation of motion.

s = ut + 1/2 ( at² )

4 m = (0)(2) + 1/2( a )(2)²

4 = 2a

2 m/s² = acceleration


Now, convert g into kg = 500 / 1000 kg or 0.5 kg

As, Force = mass × acceleration
Or F = ma

Force = ( 0.5 kg )( 2 m/s² )
Force = 1 N

Hope it helps