110 likes | 119 Views
This chapter explores the concepts of motion, acceleration, and forces. Learn about distance, displacement, speed, velocity, acceleration, and the effects of forces on motion. Graphing motion, friction, and terminal velocity are also covered.
E N D
Motion, Acceleration, and Forces(chapter 3) • Motion occurs as something changes position • Relative motion appears according to your position • Distance is how far an object moves • Displacement if the distance and direction an object changes • This is known as a vector
Speed vs. velocity • Speed – the distance traveled per unit time (m/s) • Instantaneous speed – speed at a given point in time • Average speed = total distance/total time • Velocity – the speed and direction of an object
Acceleration – an objects change in velocity • Very unique label (ex. m/s2) • Negative acc= deceleration Acceleration = (final velocity – initial velocity) (final time – initial time)
Motion and Force • Force is a push or pull on an object • Balance forces – equal in size; opposite in direction • No motion!
Friction – a force that opposes motion • Static friction – the force to get something to move • Sliding friction – the force that keeps something moving • Rolling friction > sliding friction