Two balls of equal mass (0.45kg ) approach the origin along the positive x- and y-axes at the same speed (3.3m?) a) what is the momentum of the system?
b) Will the balls necessary collide at the origin?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c. the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors