Question

An unknown mass has an acceleration of 2 m/s2 to a 1 kg body.if the same force accelerate another body of 8 m/s2 .what is the mass of the body?

Answer 1

Use Newton's second law:
F=ma
F=(1 kg)*2 m/s² = 2 N

If F=2N and a=8m/s², then
m=F/a