Rio Salado PHY 111 Final Questions With Complete Solutions

Mechanical energy is not valid in which of the following cases? correct answer: A block sliding down a rough inclined plane If the force on an object is doubled, which of the following statements is correct? correct answer: Acceleration is increased by two times. What is the most accurate statement concerning work? correct answer: Work on a system causes a change in the energy of the system. What is the most accurate statement concerning momentum? correct answer: Like other vector quantities, momentum can be resolved into perpendicular components. What is the most accurate statement concerning gravitational potential energy? correct answer: The gravitational potential energy (PE) is the energy an object has due to its position in a gravitational field. What is the most accurate statement concerning momentum and impulse? correct answer: The net force on an object is equal to the change in momentum of the object wrt time. What is the most accurate statement concerning angular displacement? correct answer: Angular displacement must be expressed in radians for rotational kinematic equations. What is the most accurate statement concerning angular momentum? correct answer: Angular momentum is the product of moment of inertia and angular velocity. What is the most accurate stat