How is the slope derived from the conversion of potential to kinetic energy?

Which one of the following research methods can show cause and effect

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

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?