A potentiometer wire of length L and a resistance r are connected in series with a battery of e.m.f. and a resistance An unknown e.m.f. E is balanced at a length l of the potentiometer wire. The e.m.f. E will be given by:

A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?

A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?