Consider two balls on an inclined track with a constant angle

[jhj1259]

Consider two balls on an inclined track with a constant angle. Ball Q is released from rest a tthe top of the track. Ball P is given an initial velocity directed up the track. Both balls have a constant acceleration directed down the track. at the instant that the balls collide, ball Q is going 4 times as fast as ball P. Ball P is still traveling upward along the track at the time of the collision. At what fraction of the way along the track, measured from the bottom does the collision occur? (Draw a graph of velocity vs time showing motion of both balls)

 

[lewando]

Follow the template. Read the rules. What have you done so far?