Question

Which BEST describes the speed and velocity of the graph?

A)
Both speed and velocity are changing.


B)
The speed and velocity remain constant.


C)
The speed is constant and velocity is changing.


D)
The velocity cannot be determined from the graph.

Answer 1

A)

According to the graph, speed is increasing. Velocity is speed plus direction, so velocity is also changing. And this is an acceleration graph, so you know since acceleration is a change in velocity, both speed and velocity are changing.

Answer 2

A - Both speed and velocity are changing.

Explanation:

Though the answer is option A but option D can also be true. The velocity cannot be completely determined from the graph. This is because, velocity is based on the direction and motion and the graph is not completely justifying this.

Though velocity cannot be determined, but it is clear from the graph that velocity is changing, because the speed is changing.

Therefore, option A is completely true.