Lecture03 - Kinematics General Physics I Mechanics...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Kinematics General Physics I Mechanics Racquetball Striking a Wall in 3D Physics 140 Mt. Etna Stewart Hall Description of motion in 3D Choose a coordinate system; choose its origin The position vector r is from the origin to the cation of an object (a location of an object (a point) The position vector can be written in components: k z j y i x r + + = r Description of motion in 3D As the object moves, the position vector changes with time ach component Each component of vector r is now a function of time Displacement vector: 1 2 r r r r r r- = Velocity in 3D Average velocity: Instantaneous t r t t r r v aver =-- = r r r r 1 2 1 2 velocity: Time derivative of the position vector dt r d t r v t r r r = = lim Velocity in 3D Instantaneous velocity: ( 29 z y x k z j y i x dt d dt r d v + + = = r r Velocity components k dt dz j dt dy i dt dx + + = dt dz v dt dy v dt dx v z y x = = = Acceleration in 3D If the velocity vector changes (in magnitude or in direction), there is acceleration Average acceleration: t v t t v v a aver =-- = r r r...
View Full Document

Page1 / 17

Lecture03 - Kinematics General Physics I Mechanics...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online