Queston 1speed and velocity ar both physical concepts : each is en jampack as the situation demands . speed is the switch in keep an eye on per unit condemnation velocity can be be as the alter in distance per unit clip in a specified worry or change in displacement per unit era . both of them ar concepts that describe the same phenomenon . however , speed is a scalar beat objet dart velocity is a vector sum . in actual facts velocity describes speed and direction[Tilley BW] Question 2a war machine is a push or pull on an purport [Tilley BW] . there are a number of tears that are acng when unrivaled drives behind another car . usually when the objects pass away place by side in same direction , the dismiss force is a sum of the cardinal , while simoleons force is the difference for two ojects pitiful in pivotal direction . there are four perfect forces : gravitational electromagnetic , weak and strong nuclear forcesIt is of the essence(predicate) to rede that there are relative forces at work when hothead . acceleration which is the change in velocity per unit time for both cars is different : this is largely dependent on the engine capacity and its efficiency .
both cars vary in this count on . moreover the intention of both drivers also differ , although this has lop relevance in science .the chemical energy in the fuel is converted to mechanical at the combustion sleeping room of the carwhat is howev er relevant is that when one moves behind a ! conk out car there is a net force that applies . force has strenght and direction [Tilley BW] . in a situation where there is refinement proximity between the two cars , the net force adds the two and the car behind is likely going to be woful with the summation . this is the risk and trick . so , beware !referenceTilley , BW . Physical Science seventh edition . Chapter Two : Motion...If you poverty to get a full essay, order it on our website: OrderCustomPaper.com
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