Velocity vs Time for car and truck 30- w 25 20+ Velocity (m/s) 15+ 10 5+ 5 UP 10 15 20 25 30 Time (s) How long will it take for the car to catch up with the truck? Write your answer using two significant figures.​

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

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.

The energy released by a nuclear fusion reaction is produced when