Answer:
9.39Watts
Explanation:
The work done by the car is converted to kinetic energy. Hence;
Work done = Kinetic energy =1/2mv²
Time t = 23ms =23×10^-3s
Mass = 675g = 0.675kg
v = 0.8m/s
Work done = 1/2(0.675)0.8²
Work done = 0.216Joules
Average power = Work done/Time
Average power = 0.216/0.023
Average power = 9.39Watts
Hence the average power (in W) delivered to the car by the motor during its acceleration is 9.39Watts
