Question

multiple choice question
the speed - time graph of a car shows you when the car accelerates due to a change in

direction.
momentum.
speed.
position.

Explanation:

Acceleration is the rate of change of velocity. Velocity is a vector quantity with both speed and direction, but on a speed - time graph, we are only concerned with the change in speed as the y - axis represents speed and the x - axis represents time. A change in direction would not be shown on a simple speed - time graph. Momentum is mass times velocity and is not directly what the speed - time graph represents in terms of what causes acceleration shown on it. Position is related to displacement and not directly related to acceleration shown on a speed - time graph.

Answer:

speed.