Final answer:
The power expended by the car is calculated by dividing the energy used by the time, resulting in 100 Watts of power.
Step-by-step explanation:
The student asked: "A car uses 2,500 Joules in 25 seconds. Find Power." To find the power, we will use the formula for power, which is the energy used over time.
Power Calculation:
Power (P) = Energy (E) / Time (t)
P = 2,500 Joules / 25 seconds
P = 100 Watts
Therefore, the power expended by the car is 100 Watts.
This calculation can be directly related to daily technology such as a light bulb, which uses power in the same way, measured in Watts. In a practical context, if the person doing the work is exerting energy at a rate of 200 W, it would take two seconds to do the equivalent amount of work that the car did in 25 seconds with its 100 Watts of power.