Physical science ELO 6 review, Top Questions and answers, 100% Accurate.

Physical science ELO 6 review, Top Questions and answers, 100% Accurate. Motion is described with respect to a - -Frame of reference Displacement is distance combined with - -Direction Displacement vectors of 3 m and 5 m in the same direction combine to make a displacement vector that is - -8 m Average speed is the total distance divided by the - -total time The slope of a distance-time graph is equal to the - -speed velocity is - -speed with direction Two or more velocities can be combined by - -using vector addition Acceleration is equal to - -change in speed divided by time. The rate at which velocity is changing at a given instant is described by - -instantaneous acceleration. what kinds of distances would you choose to make measurement in millimeters? and in kilometers? - -mm - pencil lead, small items km - distance between cities - large items if two displacement vectors add to yield a total displacement of zero, what do you know about the two displacements? - -They go an equal distance, but an opposite direction (example 5 m east, then turn around and go 5 m west how do you know that a speedometer tells you the instantaneous speed of a car? - -It tells us how fast we are going right now, which is instantaneous speed. on a distance-time graph- what would the curve describing constant speed of a car? - -A graph that go up and the right in a straight line a spider is crawling on a wall. first it crawls 1 meter up, then 1 meter to the left, and then 1 meter down. what is the total displacement? - -1 meter to the left.