* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download SCIENCE NOTES – FORCE AND MOTION
Survey
Document related concepts
Modified Newtonian dynamics wikipedia , lookup
Jerk (physics) wikipedia , lookup
Coriolis force wikipedia , lookup
Newton's theorem of revolving orbits wikipedia , lookup
Faster-than-light wikipedia , lookup
Fictitious force wikipedia , lookup
Velocity-addition formula wikipedia , lookup
Centrifugal force wikipedia , lookup
Seismometer wikipedia , lookup
Classical mechanics wikipedia , lookup
Hunting oscillation wikipedia , lookup
Length contraction wikipedia , lookup
Equations of motion wikipedia , lookup
Classical central-force problem wikipedia , lookup
Work (physics) wikipedia , lookup
Mass versus weight wikipedia , lookup
Centripetal force wikipedia , lookup
Transcript
SCIENCE NOTES – FORCE AND MOTION LESSON 1 What Does it Take to Make an Object Move? - Objects with more mass are harder to set in motion. - A push or pull that acts on an object is a force. An Objects Natural Motion? - The mass of an object makes it resist being set in motion. - The tendency of an object to resist change of motion is called inertia. - Galileo was the scientist that began to understand how inertia affects the movement of objects. Is Force Needed to Maintain Motion? - Friction acts against moving objects and opposes the movement. - If friction is taken away, no force is needed to maintain motion at a steady rate. - Newton’s First Law of Motion – Objects at rest remain at rest and objects traveling at a steady rate in a straight line continue that way until a force acts on them. Where is it? - You are moving if you are changing position. Position is the location of an object. What Speed Is - The speed of an object is how fast its position is changed with time at any moment. What is Velocity? - The speed of a moving object taken together with its direction of travel gives the velocity for the object. - Two things can have the same speed but different velocities if they are moving in different directions. What is Acceleration? - A change in velocity is called acceleration. - A special case of acceleration (deceleration) occurs when a force causes the speed of an object to decrease. What Keeps Things Moving in a Circle? - A force must act upon an object for it to move in a circle and resist moving in a straight line. END OF NOTES