Answer:
Decrease the mass.
Step-by-step explanation:
By Newton's Second Law we know that net force exerted on a given system equals the rate of change of linear momentum (
) in time.
(Eq. 1)
When mass of the system has a constant mass, this net force (
) is reduced to its mass (
) multiplied by acceleration (
):
(Eq. 2)
If we keep net force exerted on system constant, then a decrease on mass is compensated by an increase in acceleration. Hence, correct answer is: Decrease the mass.