Question

the odometer of a car reads 1000 km at the start of a trip and 1500 km at the end of the trip if the took 5 hrs,calculate the average speed of the car in km h -1 and Ms -1

Answer 1

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Answer 2

Concept:

• The odometer of a vehicle reads the distance covered by the vehicle
• Kinematics
• Average speed is the rate of distance covered by an object or the distance covered per unit time

Given:

• The initial odometer reading = 1000 km
• The final odometer reading  = 1500 km
• The total time of the trip = 5 hours

Find:

• The average speed of the car in km/h
• The average speed of the car in m/s

Solution:

The distance covered = final odometer reading - initial odometer reading

Distance covered = 1500 km - 1000 km = 500 km

Average speed = distance covered/ total time

Average speed = 500 km/ 5 h = 100 km/h

Average speed in m/s = 100 * 1000/3600 = 100*5/18 = 250/9 = 27.7 m/s

The average speed of the car is 100 km/h or 27.7 m/s.

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