Question

A force of 20N acts upon a body whose weight is 9.8N what is the mass of the body and how much is its acceleration.if the weight of the body is 50N what is its mass (g=9.8m/s²)

Answer 1

(i) Since w=mg
9.8=m×9.8
m=1 kg
As we know
F=ma
a=f/m
a=20/1
a=20 m/s
(ii) mass of 50N is
W=mg
50=m×9.8
m=50/9.8
m=5.1 kg