If the man DECREASES the force of his push on the cart, the cart slows down.
The force applied to an object is determined by applying Newton's second law of motion.
F = ma
where;
a = Δv/t
F = (mΔv)/t
mΔv = Ft
Δv = Ft/m
From the equation above, when the applied force decreases, the change in velocity decreases.
Thus, if the man DECREASES the force of his push on the cart, the cart slows down.
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