Question

If distance travelled by a train is495 km in4 hours and 30 minutes

Answer 1

Answer:

Speed is the rate at which an object covers some distance. In other words, speed is a measure of how much distance one covers in a fixed amount of time. We generally measure it in units of kilometres/hour, or metres/second. Now the standard unit of distance and time are metre and second respectively. Looking at the unit of speed, we can infer that speed is the ratio of distance and time.

Or, we can say that speed = distance/time

Now, to find out the speed of the train specified in the question, we will find the value of the ratio between the distance it covers to the time it takes to cover that distance.

Distance = 495 km

Time = 4 hr 30 min = 4 hr 1/2hr = 4.5 hr

Therefore, speed = 495km/4.5hr = 110km/hr

Hope this helps...

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