Question

which would require a greater force accelerating 10g mass at 5m/s or a 20g mass at 2 m/s?

Answer 1

more force would be required to accelerate a mass of 10g at 5m/s

Answer 2

first of all m/s is the unit of velocity not of acceleration.. I think it's a mistake ...
and according to question we know
F = ma
i.e force is directly proportional to mass and acceleration ..
heavier the mass and greater the acceleration will cause a big force ..
then force for 10g mass and acceleration for 5m/s^2
=10(5) = 50
and for 20 g mass and acceleration of 2m/s^2 ..
force is = 20(2) = 40
here mass is heavy in second case but acceleration is smaller