5. Identify the object or objects in motion in each example of kinetic energy. • A speeding train:
A bowl of hot soup:
• Electrical energycarried by a wire:

Write a polynomial function with the given zeros x= -1,0,2show your work

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver