A shopper pushes a grocery cart 25.0 m at constant speed on level ground, against a 29.0 N frictional force.
He pushes in a direction 30.0
below the horizontal.
(a) What is the work done on the cart by friction?
W=-725
units J
(b) What is the work done on the cart by the gravitational force?
W-0
units J
(c) What is the work done on the cart by the shopper?
W 2165 x units J
(d) Find the force the shopper exerts, using energy considerations.
F-400.46 x units N
(e) What is the total work done on the cart?
W=-725 x units J
