The acceleration of your bicycle as you ride it from your home to the store changes. It can increase and decrease. Constanta acceleration does not occur because that means that you would have to always go at the same speed and end up going pas the store. Reducing speed is a way of acceleration in physics. When you reach it, you can calculate how much your velocity was average and see how changing your acceleration changed it.
Your answer is: A series of increases and decreases
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