A 45 g ball collides elastically with 30 g ball at rest and stop. if the second ball’s final speed is 3.0 m/s what was the first ball’s initial speed?

What is magnetic flux? explain faraday's law of induction.

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

Suppose you plot the distance traveled by an object at various times and you discover that the graph is not a straight line. what does this indicate about the object's acceleration?