* Speed vs. Distance: The problem gives you a direction (north) and a distance (40 meters). This tells us the car's *position* but not its *speed*.

* Time: We need to know how fast the car is moving to calculate how far it travels in 15 seconds.

To solve this, we need to know the car's speed.

Here's how you'd approach it if you knew the speed:

1. Convert speed to meters per second (m/s): If you were given the speed in kilometers per hour (km/h), you'd need to convert it to meters per second.

2. Calculate distance: Multiply the speed (in m/s) by the time (15 seconds). This will give you the distance traveled in meters.

Example:

Let's say the car is traveling at 10 m/s.

* Distance = Speed x Time

* Distance = 10 m/s x 15 s

* Distance = 150 meters

In short, you need the car's speed to figure out how far it will travel in 15 seconds.