Deceleration always means slowing down or decreasing speed. It is not by itself directional. That is, it is not a vector.
Deceleration always means slowing down or decreasing speed. It is not by itself directional. That is, it is not a vector.Acceleration is a vector, and a negative acceleration can indicate either decreasing or increasing speed. Consider the example of something that has been thrown upward in a gravitational field, such as near the Earth's surface.
Deceleration always means slowing down or decreasing speed. It is not by itself directional. That is, it is not a vector.Acceleration is a vector, and a negative acceleration can indicate either decreasing or increasing speed. Consider the example of something that has been thrown upward in a gravitational field, such as near the Earth's surface.The direction of acceleration for such an object is consistently downward until it hits the ground. One can arbitrarily call the downward direction negative. In that case the acceleration is continuously negative as the object rises, reaches the highest point and then goes downward.
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Deceleration always means slowing down or decreasing speed. It is not by itself directional. That is, it is not a vector.
Deceleration always means slowing down or decreasing speed. It is not by itself directional. That is, it is not a vector.Acceleration is a vector, and a negative acceleration can indicate either decreasing or increasing speed. Consider the example of something that has been thrown upward in a gravitational field, such as near the Earth's surface.
Deceleration always means slowing down or decreasing speed. It is not by itself directional. That is, it is not a vector.Acceleration is a vector, and a negative acceleration can indicate either decreasing or increasing speed. Consider the example of something that has been thrown upward in a gravitational field, such as near the Earth's surface.The direction of acceleration for such an object is consistently downward until it hits the ground. One can arbitrarily call the downward direction negative. In that case the acceleration is continuously negative as the object rises, reaches the highest point and then goes downward.