P = power used by the car = 260,000 Watt
t = time taken by the car to complete the race = 15 sec
W = work done by the car to complete the race = ?
Work done by the car is given as
W = P t
inserting the values given above
W = (260,000 Watt) (15 sec)
W = 3,900,000 Watt-sec
W = 3,900,000 Joules (Since Joules = Watt-sec)
W = 3.9 x 10⁶ Joules
