Atest car travels in a straight line along the x-axis. the graph in the figure shows the car’s position x as the function of time. find it’s instantaneous velocity at point b.

Velocity is defined as the change in position per unit time, which is literally the slope of the position vs time graph. Thus, the instantaneous velocity at point B is the slope of the graph at point B, which is approximately

(40m - 20m) / (3s - 0s)

= 6.67 m/s.

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d