Question

A force of 20 N acts upon a body of weight 9.8 N. What is the mass of the body and how much is its acceleration?

Answer 1

Weight of the body=9.8 N
Acceleration due to gravity on earth=9.8 m/s²
Hence,mass of the body=W/g
                                       =1 kg
 Force exerted on body=20N
 We know,
           F=ma
           a=F/m
           a=20/1
           a=20 m/s²

Answer 2

Mass of body = Weight / g
= 9.8 N / 9.8 m/s²
= 1 kg
Mass of the body is 1 kg

Acceleration = F / m
= 20 N / 1 kg
= 20 m/s²
Acceleration of body is 20 m/s²