a vehicle covers a distance of 500 km in 4 hours from station A to Station B calculate the speed in km h-1 and ms-1​

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1. Answer:

   Distance: 500km

   Time: 2Hrs

   Step-by-step explanation:

   Distance: 500km

   Time: 2Hrs

   And what’s asked?

   Speed: (?)

   So as per the formula,

   Speed = Distance / Time

   putting the given values,

   Speed = 500 km/ 2 hrs

   Speed = 250 Km/hr

   This is the required answer.

   And what’s more? We always denote any quantity (Speed, here) in terms of its SI units. In this case, the SI unit of speed is meter per second (m/s). So we need to convert 250 Km/hr into m/s.

   For the same, we should know the conversion:

   1 Km = 1000 m

   1 hour = 60 minutes = 60 x 60 Seconds [we know that 1 minute equals 60 seconds] = 3600 seconds.

   Now reaching the final step, what was our answer in km/hr?

   250 Km/hr

   So putting the value of Km and Hr in it, we get

   = 250 x 1000 m / 3600 s

   = 69.44 m/s

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