An object has an acceleration of 0 m/s squared. Does this mean that the object must be stationary. Explain.
Stationary means that the object does not move.
I don't think that the object must be stationary in this case because the scalar zero only tells us that the speed of the object does not change, but it's directions might. So it all stays constant.
How does my answer look?
Your answer is correct, except for one thing in your explanation. If an object's direction changes it must be moving,. A direction change requires acceleration, even if the speed stays the same.
Your answer is mostly correct, but it is important to note that when an object has an acceleration of 0 m/s², it means that the object's velocity is constant, not just the speed. This means that the object may still be in motion, but it is moving at a constant speed without changing its direction.
To further explain how to determine if an object is stationary based on acceleration, you can use the following steps:
1. Check if the acceleration is zero: If the acceleration is indeed 0 m/s², it means that the object's velocity is not changing.
2. Determine the object's current velocity: If the velocity is also zero, it indicates that the object is indeed stationary.
3. If the velocity is not zero, the object is still in motion: Even though the object's acceleration is zero, it may still be moving at a constant speed. Therefore, it is not necessarily stationary.
Remember that velocity is a vector quantity, which means it includes both speed and direction. So, while a zero acceleration suggests that the speed remains constant, the object may still be moving in a straight line or curve without changing speed.