two objects with different masses collide and bounce back after an elastic collision. before the collision, the two objects were moving at velocities equal in magnitude but opposite in direction. after the collision

Robbie owns 15 percent more movies than rebecca and rebecca owns ten percent more than joshua rebecca has 220 movies how much do robbie and joshua each have

When graphing a linear equation that is written in the form y=mx+b, the variable m represents the y-intercept. assuming that b> 0, which of the following best describes how reversing the sign of b would affect the graph? a) the new line will be shifted down b units b) the new line will be shifted down b x 2 units c) the new line will be a perfect reflection across the x-axis d) the new line will be a perfect reflection across the y-axis

Why are gold and platinum used for jewelry