Passengers in a bus fall back as it accelerates. Why?

Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?

What is acceleration?

A railway carriage moves over a straight level track with an acceleration 'a'. A passenger in carriage drops a stone. What is the acceleration of the stone with respect to carriage and the earth?

Is uniform circular motion an example of uniform acceleration. Why?

A bigger rain drop falls faster than smaller one. Why ?

What is uniform acceleration?

Describe the effect on passenger when a moving bus suddenly changes its direction of motion.

Explain why a particle moving with a constant speed along a circular path has radial acceleration.

What is the unit of acceleration-

Why is a body moving in uniform circular motion accelerated?