You have a motion security light by your door. a cat run across it and the light turns on. what is the input of this system and what is the output?

In terms of physical activities, the input is motion of the cat while the output is the turning on of lights.

While in terms of energy, the input is mechanical energy while the output is light energy

Explanation:

It is given that the door is equipped with motion sensors. Thus, any kind of motion can be detected by the door.

So in terms of physical activities, the input is motion of the cat while the output is the turning on of lights.

While in terms of energy, the input is mechanical energy while the output is light energy

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