Acceleration is calculated as the change in speed over time. The speed-time graph shows a 50 second car journey. Calculate the acceleration between 20 to 30 seconds

Explain the consequences of this addiction to the brain tissue

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?