Question

what force should be applied on a 10 kg body so that it moves
down in vacuum with an acceleration of 3 m/s^2?(Take g=9.8m/s^2)​

Answer 1

Answer:

-68N

Explanation:

since the body is moving downwards the acceleration of the body becomes(a-g) hence F=ma =>F=m(a-g) therefore F=10(3-9.8)=-68N

Answer 2

Answer:

mass = 10 kg

acc = 3 m/s²

force = mass × acceleration

= 10 × 3

= 30 N

Explanation:

note: the force should be continuous not for a moment