an 0.80-kg cart rolls down a frictionless hill of height 0.32m. at the bottom of the hill the cart rolls on a flat surface which exerts a frictional force of 2.0N. how far does the cart roll on the flat surface before coming to a stop

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

Why does the liquid rise up through the dip tube when the valve is open

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be a. equal to the weight of the car. b. less than the force of friction exerted upon the car. c. equal to the force of friction exerted upon the car. d. greater than the weight of the car.