A factory whistle blows at a frequency of 1216 Hz what will the passengers of a car moving at 28 m/s away from the whistle hear if the speed of sound is 343 m/s

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

Who was the first scientist to measure speed as distance over time?

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter