Turning and acceleration
I believe in the "Dr. Pepper Test" for checking whether something is accelerating. As we've seen, being at rest and being in motion are functionally the same thing. But changes in velocity are important. They involve acceleration, and are caused by forces.
When do you experience acceleration in a car? Imagine you went to 7-11 and got a giant sugary soda and balanced it on your dashboard. Stopped (or at constant v) this won't fall. What will make it fall? Speeding up, slowing down, or turning. These are all accelerations.
The velocity of an object is the direction it is moving in. From this picture, we can see the velocity of this car is changing
Turning and acceleration
I believe in the "Dr. Pepper Test" for checking whether something is accelerating. As we've seen, being at rest and being in motion are functionally the same thing. But changes in velocity are important. They involve acceleration, and are caused by forces.
When do you experience acceleration in a car? Imagine you went to 7-11 and got a giant sugary soda and balanced it on your dashboard. Stopped (or at constant v) this won't fall. What will make it fall? Speeding up, slowing down, or turning. These are all accelerations.
The velocity of an object is the direction it is moving in. From this picture, we can see the velocity of this car is changing