In the space, show how you use measurements and calculations to predict the final angular speed of the two-disk system? Hint: Be careful when measuring the diameter of the small disk. When the small disk is held above the large one, it is closer to the camera and appears to be larger than it actually is. Measure the size of the smaller disk after it is dropped onto the large one.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

The charge on a charged sphere is; 1. concentrated at its center 2. distributed uniformly throughout its volume 3. clustered on its center 4. distributed uniformly over its surface