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Question

An object travels the first \(200\text{ m}\) in \(20\text{ s}\) and the next \(200\text{ m}\) in \(30\text{ s}\). The average speed of the object is ______.

This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is
$8\text{ m/s}$

Average Speed Calculation for Object Travel

To find the average speed of the object, we need to determine the total distance traveled and the total time taken.

Average Speed Formula

The formula for average speed is:

\(\text{Average Speed} = \frac{\text{Total Distance}}{\text{Total Time}}\)

Step-by-Step Calculation

  • Calculate Total Distance: The object travels \(200\text{ m}\) and then another \(200\text{ m}\).

    \(\text{Total Distance} = 200\text{ m} + 200\text{ m} = 400\text{ m}\)

  • Calculate Total Time: The first part of the journey takes \(20\text{ s}\) and the second part takes \(30\text{ s}\).

    \(\text{Total Time} = 20\text{ s} + 30\text{ s} = 50\text{ s}\)

  • Calculate Average Speed: Divide the total distance by the total time.

    \(\text{Average Speed} = \frac{400\text{ m}}{50\text{ s}} = 8\text{ m/s}\)

Result

The average speed of the object is \(8\text{ m/s}\).

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Similar Questions

  1. A person drove at 53 kmph for 2.5 hours, then increased his speed by 28 kmph, and reached the destination in another hour. Find the average speed (in kmph) of the person during the entire journey.

Important Questions from Average Speed

  1. A car covers the first 41 km of its journey in 45 min and covers the remaining 23 km in 35 min. What is the average speed (in m/sec) of the car?

  2. Akhil drives a car from his home to office at an average speed of 50 km/h and reaches office 10 minutes early. But one day due to some problem with the car, he could drive at an average speed of 30 km/h only and reached office 10 minutes late. How far is his office from home ?

  3. During a flight of 900 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 300 km/h and the time of flight increased by 30 min. The original duration of the flight was :

  4. If a man travels from A to B at a speed of 50 km/h and returns by increasing his speed by 40%, then find his average speed (to 2 decimal places) for both the trips.

  5. A man travels a distance of 420 km by train which moves at the speed of 75 km/h and returns back by car at the speed of 50 km/h. Find his average speed for the whole journey.

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