Is it Acceleration or Not?
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Acceleration
A car slows down as it comes to a red light.
Acceleration
A you see your friend approaching, you jump up fro your chair and run over to greet her.
Questions to ask to determine if it is acceleration
Is it speeding up (accelerating)? Is it slowing down (decelerating)? Is it moving in a cirular motion (direction keeps changing)? Is it changing directions?
Acceleration
You begin to walk faster when you sense that someone is following you.
Not Acceleration
You pedal your bicycle uphill at a speed of 5km/hr.
Not Acceleration
Your brother walks across the room to open the window.
Acceleration
Your dog runs around in circles, chasing his tail.
