Question

What can you say about acceleration of a car if velocity is decreasing with time

Answer 1

Answer:

If speed is increasing and direction is not changing, then acceleration is positive. If speed is constant then acceleration is zero. If speed is decreasing then acceleration is negative. ... Or you could have an increasing acceleration opposite your velocity, slowing you down more and more quickly as time goes on.Assuming rightward is positive, the velocity is positive whenever the car is moving to the right, and the velocity is negative whenever the car is moving to the left. The acceleration points in the same direction as the velocity if the car is speeding up, and in the opposite direction if the car is slowing down.

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