An Indy 500 race car's velocity increases from 2 mis to 40 mis over a 40 s time interval. What is its acceleration ?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

Explain earth's motion, using the terms "precession" and "rotation" in your answer.