Question:
By running at a speed of 28 km/h how much distance a bus will cover in 9 second?
Correct Answer
70.02 meter
Solution And Explanation
Solution
Given,
Speed = 28 km/h
Time = 9 second
Thus, distance = ?
Here the speed is given in the kilometer per hour while the time is in the second. So, for the ease of calculation, the speed should be converted into meter per second.
Conversion of the speed from kilometer per hour to meter per second
To convert kilometer per hour, the speed is multiplied by 5/18
Therefore, 28 km/h = 28 × 5/18 m/s
= 28 × 5/18 m/s
= 140/18 = 7.78 m/s
Thus, speed = 7.78 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 7.78 m/s × 9 s = 70.02 m
Thus, distance = 70.02 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 7.78 meter
∴ In 9 second, the distance covered = 7.78 m × 9 = meter
Thus, distance = 70.02 meter Answer
Similar Questions
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(2) Find the distance covered by an athlete in 25 hours if it covers a distance of 56 km in 15 hours.
(3) Find the distance covered by a moving object in 28 hours if it covers a distance of 64 km in 18 hours.
(4) By running at a speed of 2 km/h how much distance a scooty will cover in 7 second?
(5) By running at a speed of 49 km/h how much distance a motor bike will cover in 8 second?
(6) Find the distance covered by a cyclist in 21 hours if it covers a distance of 68 km in 11 hours.
(7) Find the distance covered by a motor bike in 23 hours if it covers a distance of 56 km in 13 hours.
(8) By running at a speed of 11 km/h how much distance a bus will cover in 9 second?
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(10) By running at a speed of 24 km/h how much distance a bus will cover in 9 second?