Answer: I hope it helps
Step-by-step explanation:
The speedometer measures the speed of the car, which is the magnitude of velocity. Velocity, on the other hand, includes both speed and direction.
If the speedometer reads a constant speed of 40 kilometers per hour, it means that the car is moving at a constant speed of 40 kilometers per hour. However, it does not provide information about the direction in which the car is moving. Therefore, we cannot say with 100% certainty that the car has a constant velocity.
For example, imagine a car moving in a circular path at a constant speed of 40 kilometers per hour. In this case, the car has a changing velocity because its direction is constantly changing.
In summary, a constant speed does not guarantee a constant velocity. To determine if the car has a constant velocity, we need to know both the magnitude of the speed and the direction of the motion.