A race car can be slowed with a constant acceleration of -11 m/s2 a. if the fare is going 50 m/s, how many meters will it travel before it stops
b. how many meters will it take to stop a car going twice as fast

HELP ASAP

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current