Velocity Changes: Understanding Direction and Acceleration in Changing Objects

[UrbanXrisis]

What if an object is changing from -m4/s to -1m/s. Is the velocity becoming more positive or less positive? Is there acceleration in this?

What if an object is turning around so that it undergoes a change in velocity from 2m/s to -2m/s? Is the velocity becoming more positive or less positive? Is there acceleration while the object is turning?

 

[Doc Al]

What if an object is changing from -m4/s to -1m/s. Is the velocity becoming more positive or less positive?

I assume you mean -4 m/s to - 1 m/s. Well, you figure it out. Draw a number line from -10 to +10 and mark off where -4 and -1 is. When you move from one to the other, which direction do you move, positive or negative.

Is there acceleration in this?

If the velocity changes, there's acceleration.

What if an object is turning around so that it undergoes a change in velocity from 2m/s to -2m/s? Is the velocity becoming more positive or less positive? Is there acceleration while the object is turning?

Figure this one out the same way.

 

[M98Ranger]

In both of these scenarios, the velocity is becoming less positive. In the first scenario, the object is slowing down from -4m/s to -1m/s, so its velocity is becoming less negative and therefore closer to 0, making it less positive. In the second scenario, the object is changing direction and its velocity is going from a positive 2m/s to a negative 2m/s, so again, its velocity is becoming less positive.

There is acceleration in both scenarios. In the first scenario, the object is slowing down, which means it is experiencing a negative acceleration. In the second scenario, the object is changing direction, which also requires a change in velocity, and therefore acceleration. This acceleration is known as centripetal acceleration, as it is directed towards the center of the circular motion the object is undergoing while turning.

Overall, it is important to understand that changes in velocity, both in terms of speed and direction, indicate acceleration. Whether the velocity is becoming more positive or less positive depends on the specific scenario and the direction of the change. But regardless, there is always acceleration involved in these types of velocity changes.