Events:
P – Passenger lurches forward when a speeding bus halts suddenly.
Q – Rain droplets falling vertically hit the rear window of a car accelerating forward.
R – Mud flies off tangentially from the tyre of a rotating bicycle wheel.
Choose the option that correctly classifies P, Q and R respectively.
a) P: rest, Q: motion, R: direction
b) P: motion, Q: direction, R: rest
c) P: motion, Q: rest, R: direction
d) P: rest, Q: direction, R: motion