Question

1. which of the following are ways to accelerate? slow down speed up change direction all of the above 16. a person running faster to pass another runner is an example of: speed velocity acceleration

Explanation:

• For Question 15: Acceleration is a vector quantity. It occurs when there is a change in velocity. Velocity has both magnitude (speed) and direction. Slowing down (decreasing speed - a change in magnitude), speeding up (increasing speed - a change in magnitude), and changing direction (a change in the direction component of velocity) all result in a change in velocity, so they are all ways to accelerate.
• For Question 16: When a person runs faster, there is a change in their speed (magnitude of velocity). Acceleration is defined as the rate of change of velocity. Since speed is changing (assuming direction is constant or also changing in a way that contributes to overall velocity change), this is an example of acceleration. Speed is just the magnitude of how fast an object is moving without considering the rate of change. Velocity is a vector (speed + direction) but the key here is the change (which is acceleration).

Answer:

1. all of the above
2. acceleration