Question

If a car is moving at 90 km/h and it rounds a corner, also at 90 km/h, does it maintain a constant speed? A constant velocity? Defend your answer.

Answer 1

Constant speed, different velocity.

Explanation:

This question is basically about scalars and vectors which you can find more about here.

But shortly,
Vectors have a magnitude and a direction so you'll say 90 km/h north or south.
However, Scalars have a magnitude only without a direction.

Since the magnitude stayed the same in your example (90 km/h), the speed (scalar) will be the same, however the direction changed (the car turned around a corner therefore the velocity (vector) changed its direction.