(6) A 100 W heater is connected to a 240 V mains supply. Calculate the:
current drawn;
resistance of the hheater.I want to know how to go about it

Current drawn = 0.417 A (rounded to 3 significant figures)

Resistance = 576Ω (rounded to 3 significant figures)

Explanation:

Current = Power ÷ Voltage

Current = 100W / 240V

∴ Current = 0.416666666 = 0.417A

Resistance = Voltage ÷ Current

Resistance = 240 ÷ 0.417

∴ Resistance = 575.539 = 576Ω

I really don't understand what's behind this question at all,
but I can sure do the math:

           Speed = (distance covered) / (time to cover the distance) .

                      =       ( 36 meters)         /        (13 seconds)

                      =         (36/13)      (meters/second)

                      =         2.7692... meters per second  (rounded)

                                 (about   6.2  miles per hour)   .