1. When an object moves in uniform circular motion, are both the velocity and ac
ID: 1932486 • Letter: 1
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1. When an object moves in uniform circular motion, are both the velocity and acceleration constant? Explain. 2. When riding in a car, the driver makes a sharp turn and you move in a direction that is opposite the turn. Why? 3. What are two properties of kinetic friction? 4. When an object moves from point A to point B on one path, a force acting on the objects does 50 J of work. When the object moves from point A to point B on a different path, the same force does 80 J of work. Is the force conservative or nonconservative and why? 5. When will a force do negative work on an object? 6. Is the mechanical energy always conserved? If no, when is it conserved? If yes, why? 7. What is the direction of the force acting on an object during uniform circular motion? 8. A friend tells you that astronauts float in the space shuttle when in earth orbit because there is no gravity in space. Is your friend correct? Why or why not?Explanation / Answer
4) static friction > kinetic friction > rolling friction for the same combinations of surfaces when two surfaces are slipping across each other in the presence of kinetic friction, heat is generated and mechanical energy is not conserved when a ball rolls (static friction) without slipping across a surface, mechanical energy is conserved and no heat is generated sorry friend,,multiple questions are not to be posted under single question,,this is against to cramster rules,,so i have answered only one question
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