A cartravelsa distancex kmwitha speed36km/ h and another x km with 45 km / h . Theaveragespeedofthe caris

A cartravelsa distancex kmwitha speed36km/ h and another x km with 45

1.	A cartravelsa distancex kmwitha speed36km/ h and another x km with 45 km / h . Theaveragespeedofthe caris
Answer» `40.5km //h` `40KM //h` `42km//h` DEPENDENT on x Solution :IF a= angleofprojectionand u-intialvelocity, horizontalcomponentofvelocity`=u COS alpha` . Thehorizontalcomponentof velocity of aprojectilleremainsunchangedthroughoutitspathbutat thetopmostpointthe verticalcomponentof itsvelocitybecomeszero. Given`, u COSALPHA = ( u )/(2) ` or `cos alpha=1/2= cos60 ^@ " or ", a= 60 ^(@)`