When we beat blanket with the help of stick, then it comes into motion. But the dust particles continue to be at rest due to inertia and get detached from the blanket.

Unbalanced force can only change the state of motion of an object but not the shape or size.

Let distance between “A and B” be d. Average speed =Total distance/Total time = 2V₁.V₂/ V₁ + V₂

Given, Speed=0.06m/s =0.06×3600/1000km/h =0.216km/h

As velocity is constant, so it travels equal distance in equal interval of time. Hence, object is in uniform motion.