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Indicate whether the following motions are not at constant acceleration. explain.1. You are on escalator after...

Indicate whether the following motions are not at constant acceleration. explain.1. You are on escalator after stepping on 2. Driving from Azusa to Pasadena 3. A rock falling from a high building, neglecting air friction
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Answer #1

1)

when we get into accelerator, a constant force acts on the accelerator

Since force is constant, acceleration must be constant

Answer: constant acceleration

2)

Driving involve accelerating as well retardation.

So, this is not an example of constant acceleration

Answer: no constant acceleration

3)

when object falls, only force acting on it is gravitational force

So, its acceleration is constant and is equal to acceleration due to gravity

Answer: constant acceleration

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