# Physics Test 2: Question Preview (ID: 26487)

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 1. What is the first law of Newton? a) Energy is not created or destroyed. Only conserved. b) Force is equal to mass times acceleration c) Every action has an equal but opposite reaction. d) The law of inertia. What is the second law of Newton? a) Energy is not created or destroyed. Only conserved. b) Force is equal to mass times acceleration c) Every action has an equal but opposite reaction d) The law of inertia What is the third law of newton? a) Energy is not created or destroyed. Only conserved. b) Force is equal to mass times acceleration c) Every action has an equal but opposite reaction d) The law of inertia What would be the mass of an object with 490N of force? a) 50kg b) 4802kg c) 50J d) 4802J What is the unit for force? a) m/s b) m c) kg d) N What is the velocity of an object that has 490J of kinetic energy and a mass of 50kg? a) 10.25m/s b) 4.43m/s c) 7.78m/s d) Answer is not here What is the unit for energy? a) m/s b) J c) N d) s What would be the net force of an object with a mass of 50kg? a) 5.10N b) 490J c) 490N d) 5.10J Forces that produce a non-zero net force, which changes an object motion a) unbalanced force b) balanced force c) friction d) gravity Equal forces acting on an object in opposite directions a) Balanced forces b) Unbalanced forces c) friction d) gravity Which of the following is inertia? a) An object in motion will stay in motion until acted upon by another force. b) An object at rest will stay at rest until acted upon by another force c) Both a and b d) neither a or b Which of the following if the force that attracts a body toward the center of the earth, or toward any other physical body having mass? a) Gravity b) massivity c) inertia d) momentum What is the height of an object that has 500J potential energy and a mass of 20kg? a) 6.87m b) Answer is not here c) 4.52m d) 2.55m What does total energy equal to? a) Etotal = E1 + E2 + E3 b) Etotal = Ke + Pe c) Etotal = M1 + M2 d) Etotal = mgh Which of the following represents a type of energy that has motion? a) Potential b) Kinetic c) Intrensic d) Intentional Which of the following represents a type of energy that is stored and has to do with height? a) Potential b) Kinetic c) Intrensic d) Intentional What is the Law of Conservation of energy? a) Energy is not created or destroyed. Only conserved. b) Force is equal to mass times acceleration c) Every action has an equal but opposite reaction. d) The law of inertia. Which of the following is the formula for potential energy? a) Ke = (mv2) / 2 b) Pe = Mgh c) F=ma d) E = mc2
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