POSC 3616 Lecture Notes - Lecture 1: Conservation Law, Net Force
14 Mar 2016
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Document Summary
Displacement is the total movement between 2 numbers. The displacement between -1 and 3 is 4. The displacement between 4 and -1 is -5. You can find rate of change in x by dividing the displacement over the time: Speed: a scalar quantity because it doesn"t require knowing the direction. Velocity: vector quantity because you do have to know the direction. The length of the vector gives you the magnitude, the direction of the arrow shows the direction. If you want something to move, then you have to apply a force to it. The force depends on the amount of momentum that the object has. Powerpoint notes: precise definitions to describe motion, speed: rate at which object moves. Example: 10 m/s: acceleration: any change in velocity units of speed/time (m/s^2) *turning, slowing, and speeding up are all examples of acceleration. If the object is moving at in a straight line at a constant rate, then there is not force.
