Explanation:
It is known that the relation between power and work is as follows.
Power = [tex]\frac{\text{work done}}{Time}[/tex]
As it is given that power is 370 watts and time is 40 minutes. First, we will convert minutes into seconds as follows.
[tex]40 min \times \frac{60 sec}{1 min}[/tex]
= 2400 sec
Now, total power or energy is calculated as follows.
Power = [tex]\frac{\text{work done}}{Time}[/tex]
= [tex]\frac{370 watts}{2400 sec}[/tex]
= 888000 J
As 1 kJ = 1000 J. So, convert 888000 J into kJ as follows.
[tex]\frac{888000}{1000} kJ[/tex]
= 888 kJ
therefore, we can conclude that total energy expended by the cyclist is 888 kJ.
