Mechanics: Speed, Velocity, Acceleration, Newton's Laws, Gravity, and Force, Quizzes of Mathematics

Download Mechanics: Speed, Velocity, Acceleration, Newton's Laws, Gravity, and Force and more Quizzes Mathematics in PDF only on Docsity! TERM 1 Mechanics DEFINITION 1 The branch of science that deals with the motions of material objects and the forces that act on them. TERM 2 Speed DEFINITION 2 The distance an object travels divided by the time it takes to travel that distance. Speed (m/s) = [Distance traveled (m)] / [Time of travel (s)] TERM 3 Velocity DEFINITION 3 The distance an object travels divided by the time it takes to travel that distance, including the direction of travel. The velocity of a falling object is proportional to the length of time that it has been falling. V = d / t TERM 4 Acceleration DEFINITION 4 The amount of change in velocity divided by the time it takes the change to occur. Acceleration can involve changes in speed, changes in direction, or both. a = (vf - vi) / t TERM 5 Newton's 1st Law of Motion DEFINITION 5 A moving object will continue moving in a straight line at a constant speed, and a stationary object will remain at rest, unless acted on by an unbalanced force. TERM 6 Newton's 2nd Law of Motion DEFINITION 6 The acceleration produced on a body by a force is proportional to the magnitude of the force and inversely proportional to the mass of the object. TERM 7 Newton's 3rd Law of Motion DEFINITION 7 For every action there is an equal and opposite reaction. TERM 8 Uniform Motion DEFINITION 8 The motion of an object if it travels in a straight line at a constant speed. All other motions involve acceleration. TERM 9 Force DEFINITION 9 A push or pull that, acting alone, causes a change in acceleration of the object on which it acts. F (Newtons) = m (kilograms) X a (meters-per-second squared) TERM 10 Mass DEFINITION 10 The amount of matter contained in an object, independent of where that object is found.