Answer:
7142.86W
Explanation:
Given parameters:
Work done by brake = 40000J
Time taken = 5.6s
Unknown:
Power used by car = ?
Solution:
Power can be defined as the rate at which work is done. It is mathematically expressed as;
Power = [tex]\frac{work done }{time taken}[/tex]
Now input the variables;
Power = [tex]\frac{40000}{5.6}[/tex] = 7142.86W
