A ball is swung in a circle with a radius of 2 meters. When the ball has moved along the arc a distance of 8.2 meters, through what angle did the ball rotate. Show how you got the answer

What is the rate of change in a objects position?

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?

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.