A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car? It depends on what you mean by “speed.” If you mean the average linear velocity, then it is (150/7200) = 0.01667 m/s, or 167 cm per second. But if you are interested in the instantaneous velocity at a particular point, then it is not possible to say because there can be arbitrarily many points along its trajectory where this could occur and we would need to know where that point was located for each one in order to calculate them all! Physics of Department Member Faculty.,d Ph MillerateN -! all them calculate to order in one each for located was point that where know to need would we and occur could this where trajectory its along points many arbitrarily be can there because say to possible not is it then, point particular a at velocity instantaneous the in interested are you if But. second per cm 167 or,s/ m66701. 0 =)__/150 ( is it then, velocity linear average the mean you If.”speed ” by mean you what on depends It? car the of speed the is What.s__ in km 150 travels speed constant with traveling car A?ing Travel Car a is FastHow . PhD, MillerateN- ions obstruct no with surface level a along walking is someone if: example for; well as speeds affect factors those because involved friction any’s there whether and about talking’re we motion of kind what on depend will it then, space of amount arbitrary some over travels something fast how in generally more interested are youIf !hr/ km00 15 ors/ m00 150 =)0100.0/150 ( equals case this in which, time elapsed the into distance that dividing require would This. interval time smallallyimitesin inf an during traveled distanceimalitesin inf an find to calculus using by found be can point particular a at velocity instantaneousAn . second per traveled meters of number the is velocity linear averageThe second per meters 27about (s/ft 67 orphkm 100 from going So.h/km 50 at traveling car a than energy kinetic more times four hash/ km 100 at traveling car a, squared speed as increases energy kinetic since that argue might some,However ! all them calculate to order in one each for located was point that where know to need would we and occur could this where trajectory its along points many arbitrarily be can there because say to possible not’s it then, velocity instantaneous in interested are you if But. second per cm 167 of answer an us gives This). s2007 (. distance that travel to taken time the by) km150 ( traveled distance total the dividing by found is velocity linear averageThe