Answer:
D - Velocity is speed with direction.
Explanation:
The difference between speed and velocity is simple:
Speed can be represented as the change in distance over time, while velocity is just speed with direction.
For example, the speed of an object that traveled 10 meters over 5 seconds traveled at 2m/s.
But, if that object was traveling, say, North, then the velocity of the object would be 2m/s North.
On a side note, any change in the velocity is just acceleration, whether it is changing direction or slowing down.
Hope that was of help :)
