Which situation describes a negative acceleration?(1 point)
Responses
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 swimmer moving at a constant velocity
a swimmer moving at a constant velocity
a runner slowing down at the end of a race
a runner slowing down at the end of a race
a bicycle increasing its velocity as the rider pedals harde
a runner slowing down at the end of a race
The situation that describes a negative acceleration is:
- a runner slowing down at the end of a race
The situation that describes a negative acceleration is: a runner slowing down at the end of a race.
To understand why this is a negative acceleration situation, we need to first understand what acceleration is. Acceleration is the rate at which an object's velocity changes over time. If an object is slowing down, it means its velocity is decreasing, which indicates a negative acceleration.
To determine the acceleration, we can use the equation:
acceleration = (final velocity - initial velocity) / time taken
In the case of the runner slowing down at the end of a race, the final velocity would be less than the initial velocity, resulting in a negative value for acceleration. This negative acceleration, also known as deceleration, means the runner's speed is decreasing over time.
Therefore, a runner slowing down at the end of a race represents a situation with negative acceleration.