Question

Raghu got summer vacations and then he decided to go to his home town which is at a distance of 500km. He travels first 150 km at 25 km/hr, next 80 km with 20 km/hr and then 270 km at 15 km/hr i. Find his average speed for the whole journey (in km/hr) ii. What kind of motion is he having?

Answer 1

Answer:

i. 17.85 km/hr ii. Non uniform motion

Explanation:

Total distance=500km

Total time= 150/25 + 80/20 +270/15 hr

= 28 hr

Average speed= Total distance /Total time

=500/28

=17.85km/hr

Answer 2

Answer:

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