A shopper in a supermarket pushes a loaded cart with a horizontal force of 7 Newton. The cart has a mass of 29 kilogram.
(a) Find how far will it move in 4.0 second, starting from rest? (Neglect friction.)
m
(b) Find how far will it move in 4.0 second if the shopper places his 30 N kid in the cart before he begins to push it?
m