Electrical appliances are marked with a rating in watts (W) and volts (V) .For example an electric bulb is marked 100W-220W . 1/ what information does it represent 2/ what amount of current is required for the bulb to work?

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.