In real life a roller coaster has 20,000 Joules of Potential Energy at the top of a hill. How much Kinetic Energy does it have at the bottom of the hill? a.)40,000 J
b.)Less than 20,000 J due to Friction
c.)Exactly 20,000 J due to Friction
d.)0 J

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

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?

Which of the following are appropriate acceleration units?