A Car and Driver are traveling at a velocity of 15 milliseconds the car rear ends truck in front of them and comes to a complete stop the driver heads with a mass of 4 kilograms continuing moving at 15 milliseconds the airbag is deployed and brings to add to complete stop at 0.08 seconds what is the net force acting on the driver's head?

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The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?