A car is travelling to the right with a speed of 42\,\dfrac{\text m}{\text s}42 s m 42, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction when the driver slams on the brakes. The car skids for 4.0\,\text s4.0s4, point, 0, start text, s, end text with constant acceleration before it comes to a stop. What is the displacement of the car as it skids to a stop?

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

What is a good example of instantaneous speed

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?