If A Racing Car Travelling At 150km/h On A Circular Motion Track Makes One Circuit In 180s, How To Calculate Total Displacement Of The Car In One Circuit Of The Track And The Total Distance Travelled In 180 S?

To solve this problem 1st you need to understand two basic definitions. The first definition is the definition of the displacement. To understand displacement, one may consider it as a vector quantity. A vector quantity requires direction along with magnitude and the unit. So the displacement vector gives us the displacement from a point. One major point to be noted in this regard is that if an object moves from a point and returns to that point in the end then the displacement vector drawn is a null vector (null vector is a vector with zero magnitude). So the net displacement in this case is zero.

The other quantity you want to measure is the distance. Distance is a scalar quantity and it is the total area covered. So in the particular case, if you want to measure the distance, first you need to have units in the same frame. Here you have speed in Km/h and time is measured in seconds. So either you have to take time in hours or velocity in meter/sec units. I suggest converting velocity units. Now multiplying both quantities (velocity and time) would give you the distance covered in meters which you can convert into Km.

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