Acar moving in a straight line starts at x = 0 at t = 0. it passes the point x = 25.0 m with a speed of 11.0 m/s at t = 3.00 s. it passes the point x = 385 m with a speed of 45.0 m/s at t = 20.0 s. find (a) the average velocity, and (b) the average acceleration, between t = 3.00 s and t = 20.0 s.

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?