From the second floor of a building 3 meters above the ground, a child throws a coin upward with a velocity of 1.8 m/s. (a) Find the velocity with which the coin strikes the ground. (b)What is the highest point he reaches above the ground

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f