Chapter 4 Linear motion. 1) Linear means in a straight line. 2) Describe the motion of an object by its position, speed, direction and acceleration. 3) Distance is a scalar. Distance is “how much ground is covered” during motion.
7) Example: A crate on a train traveling at 20 m/sec. The crate is at rest wrt the train.But the crate is moving 20 m/sec relative to the ground.
10) From motion experiments, Galileo defined Speed = distance/time11) Before Galileo, motion was simply described as “fast” or “slow”
29)Kinematics variables for free falling object, Y = final position in y directionYo = initial position in y directionVoy = initial velocity in y directionVfy = final velocity in y directionay = -gt = time elapsed
1-D 1-D 2-D