Aman 2 meters tall walks at the rate of 2 meters per second toward a streetlight that's 5 meters above the ground. at what rate is the tip of his shadow moving? we've already set this up part of the way. we know that dx/dt=-2 meters per secon

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

Which one of the following research methods can show cause and effect

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions