Which situation is an example of negative acceleration?(1 point)
Responses
A jogger slowing down at the end of a race
A jogger slowing down at the end of a race
A diver jumping off a diving board and falling to the swimming pool below
A diver jumping off a diving board and falling to the swimming pool below
A car moving at a constant velocity
A car moving at a constant velocity
A bicycle increasing its velocity as the rider pedals harder
A diver jumping off a diving board and falling to the swimming pool below
The correct answer is:
A jogger slowing down at the end of a race
To determine which situation is an example of negative acceleration, we need to understand what negative acceleration means. Acceleration is the rate at which an object's velocity changes. Negative acceleration occurs when an object's velocity decreases over time.
Now let's consider each response:
1. A jogger slowing down at the end of a race: In this situation, the jogger's velocity is decreasing, which means they are slowing down. Since the velocity is decreasing, the jogger is experiencing negative acceleration.
2. A diver jumping off a diving board and falling to the swimming pool below: In this situation, the diver is accelerating downwards due to the force of gravity. However, since the velocity of the diver is increasing, this is an example of positive acceleration, not negative acceleration.
3. A car moving at a constant velocity: If the car is moving at a constant velocity, it means there is no change in its speed or direction. In this case, the car is not experiencing any acceleration, positive or negative.
4. A bicycle increasing its velocity as the rider pedals harder: When the rider pedals harder, the bicycle's velocity increases. This is an example of positive acceleration, as the velocity is changing in a positive direction.
Therefore, the first situation, "A jogger slowing down at the end of a race," is the only example of negative acceleration among the given options.