Physical Science EOC Review Questions With Complete Solutions

speed correct answer: the rate of change of position (distance per time or d/t) velocity correct answer: speed with direction acceleration correct answer: the rate of change of velocity (velocity per time) mass correct answer: quantity of matter (inertia) weight correct answer: gravitational force inertia correct answer: tendency to continue at rest or with constant velocity (mass or laziness) If distance is 800 m and time is 200 s, what is speed? correct answer: 4 m/s friction correct answer: opposes motion force correct answer: a push or pull Newton's First Law correct answer: Law of Inertia Newton's Second Law correct answer: F=ma If m=50 kg and a=2 m/s², what is force? correct answer: 100 N gravity correct answer: attraction between any two objects acceleration due to gravity on earth correct answer: 9.81 m/s² centripetal force correct answer: directed toward center, causes circular motion Newton's Third Law correct answer: action/reaction momentum correct answer: p=mv If m=3 kg and v=5m/s, find momentum correct answer: p=15 kg m/s Conservation of Momentum correct answer: momentum can be transferred but overall doesn't change kinetic energy correct answer: energy in the form of motion (1/2 mv²) potential energy correct answer: energy stored due to position elastic potential energy correct answer: energy stored by something that can stretch or compress chemical potential energy correct answer: energy stored in chemical bonds gravitational potential energy correct answer: energy stored