"Constant velocity" is a term that depicts an unvarying change in the distance an object moves each second. "Constant acceleration" is a term that depicts an unvarying change in the distance an object moves each second over a time interval. As I previously stated, the unvarying change in the distance an object moves each second is its velocity, so constant acceleration is the change in velocity per second. When driving, constant velocity and constant acceleration can be seen. If I drive down a dirt road for 15 miles for one hour, that would be an example of constant velocity because each minute I am traveling 0.25 miles. If I drive down the same dirt road for 15 miles, but travel 0.25 miles in the first minute, 0.50 miles in the second minute, and 0.75 miles in the
third minute, this would be an example of constant acceleration because the velocity is changing constantly over time.
An object cannot have a constant velocity and a constant acceleration because acceleration only occurs when there is a change in velocity.
Car B will reach the end of the 100 m drag strip before Car A. Car B moves a farther distance between each pair of consecutive seconds because its velocity is increasing over those seconds (and velocity is the change in distance over time). If Car B has a constant acceleration of 10 m/s^2, that means that between seconds 0 and 1, it moves 10 m and then between seconds 1 and 2, it moves 20 m. Car A only has a constant velocity which means that it is moving 10 m per second.
1 comment:
This is enough good work to show me that you understand the learning goals of this week, so you have earned full credit for this assignment.
It also shows me that you are ready to learn more. I can tell you are thinking hard about the third question, and you are ready to learn how to answer it.
4/4
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