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This is all down to how gravitational potential is defined. The gravitational potential at a point is defined as the work done per unit mass to move a mass from infinity to the point in the gravitational ...

The questions is constructed to show, that the order of devices do not affect the currents or voltages.

5ohm / ( 3 + 5)ohm = x/ 2V +5V     x = 35/8 V = 4 3/8V

spreading out

a) a=v-u/t

= 33/1 = 3

b) F = ma

= 950x3 = 2850

c) Friction and air resistance increases with speed, till frictional = max forward force, then force/acceleration is zero

EMF stands for the Electromotive Force and it can be defined in a few ways:

1. It's the potential across the terminal ends of a cell.

2. Or...