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The speed an object needs to move away from the gravitational pull of the Earth is called Orbital velocity Escape velocity Rotational velocity Random velocity Which statement is true about Newton’s first law of motion? A body at rest stays at rest unless a force is applied to it A body in motion stays in motion unless a force is applied to it A body in motion has the tendency to come to a stop eventually Both A and C Both A and B If you are lucky enough to get a chance to visit different planets of our Solar System, which of the following statements will be true? Your weight will change, but your mass will remain the same Your mass will change, but your weight will remain the same Both your weight and mass will remain the same Both your weight and mass will change The recoil experienced when firing a shotgun is a consequence of _____ law. Newton’s 1st Kepler’s 3rd Newton’s 3rd Newton’s 2nd Keplers 1st An astronaut feels weightlessness in space. The astronaut’s mass in space is ______. Zero The same as on the Earth Double than on the Earth Becoming lesser and lesser as s/he is going higher Proportional to acceleration Consider an apple falling off a tree. Which of the following a

pply to this situation? The apple is attracting the Earth The Earth is attracting the apple The Earth is attracting the apple; the apple is not attracting the Earth Only B and C apply Only A and B apply Due to what property does a body display the tendency to stay in the state of rest or motion? Temperature Acceleration Pressure Inertia Volume Suppose that the Sun started shrinking in size, without losing any mass. What would be the effect of the Sun’s change on the orbits of the planets? The orbits would become smaller in size The orbits would become larger The orbits would not be affected The planets would escape A black hole would form engulfing our planet According to Newton’s second law, if the net force acting on an object doubles, then the _____ doubles as well. Mass Acceleration Speed Velocity Inertia If the forces that you and your friend are exerting on an object are balanced, then the object Will not move Will move with a constant velocity Will move but not accelerate None of the above If the forces that you and your friend are exerting on an object are balanced, then the object Will not move Will move with a constant velocity Will move but not accelerate None of the above