Question

4. The initial and final odometer readings on a road trip by a bus are 9338 km and 11838 km. If the
entire trip took 50 hours, what is the average speed of the bus during the trip?
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Answer 1

Answer :

Initial reading of odometer = 9338km

Final reading of odometer = 11838km

Time of journey = 50hrs

We have to find average speed of bus during the trip$.$

★ Average speed is defined as the ratio of total distance travelled to the total time taken.

It is a scalar quantity having only magnitude.

SI unit : m/s [CGS : cm/s]

★ First of all we need to find total distance travelled by bus during the trip.

➠ Distance = R₂ - R₁

• R₂ denotes final reading
• R₁ denotes initial reading

➠ Distance = 11838 - 9338

➠ Distance = 2500 km

⧪ Calculation of average speed :

➙ v = distance/time

➙ v = 2500/50

➙ v = 50 kmph