Physical Science

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A dog is chasing a cat; the cat's velocity is "v".
The dog's velocity is directed towards the cat at all times.
The dog maintains a constant speed "v".
At the instant when the velocity of the dogs "v" and the cats "v" are perpendicular the distance between them is "x".
What's the dogs acceleration, "a", at that moment, and the dog never changes speed

Acceleration is the velocity change per second, or v/s. If both time (undefined) and speed ("never changes") are constant, then there is no change in acceleration. My guess would be 0.

how many electrons does each group lose or gain?

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