A car running between Delhi and Agra at a speed of 120 km/h includes:a...
Explanation:
The question is asking whether the given scenario includes stock variables or flow variables or both.
Stock variables: These are variables that accumulate over time and represent a quantity at a particular point in time. Examples include the amount of money in a bank account, the number of cars in a parking lot, etc.
Flow variables: These are variables that measure the rate of change of a stock variable over time. Examples include the rate of money flowing into or out of a bank account, the rate of cars entering or leaving a parking lot, etc.
In the given scenario, the car is running between Delhi and Agra at a speed of 120 km/h. This does not represent a stock variable as there is no accumulation of anything over time. Instead, it represents a flow variable as it measures the rate of change of the car's position over time.
Therefore, option B, which states that the scenario includes only flow variables, is the correct answer.
In summary:
- Stock variables accumulate over time and represent a quantity at a particular point in time.
- Flow variables measure the rate of change of a stock variable over time.
- The car running between Delhi and Agra at a speed of 120 km/h represents a flow variable.