your pet dog runs around in circles, chasing his tail. Does this mean acceleration?
4 answers
Acceleration is increasing speed.... if he is chasing his tail faster with each circle, then that would be acceleration.
The scientific definition of acceleration is the rate at which velocity changes. Velocity measures speed and direction. So any change in speed and/or direction is acceleration. Since a dog chasing it’s tail in a circle is continuously changing directions, the dog is accelerating.
How it is acceleration
Acceleration is caused by a net force. Think about being in a car. Whether it's slowing down, speeding up, or turning, your body reacts. These are all CHANGES in what you are doing. That is acceleration. Going from 50 mph north to 50 mph west is a change in velocity.