A man is pushing a cart down a slope. Suddenly the cart starts moving faster and he wants to slow it down. What should he do?

Men should follow the steps given below:

i. If the force is applied in the direction of opposite to the direction of motion, then it results in a decrease in the speed of the object.

ii. Hence, to slow down the cart, he should apply an opposite force to the moving cart.

iii. To balance the downward motion of cart which is due to the force of gravity, he can start pulling the cart instead of pushing the cart.