Question:
By running at a speed of 49 km/h how much distance a bus will cover in 9 second?
Correct Answer
122.49 meter
Solution And Explanation
Solution
Given,
Speed = 49 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, 49 km/h = 49 × 5/18 m/s
= 49 × 5/18 m/s
= 245/18 = 13.61 m/s
Thus, speed = 13.61 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 13.61 m/s × 9 s = 122.49 m
Thus, distance = 122.49 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 13.61 meter
∴ In 9 second, the distance covered = 13.61 m × 9 = meter
Thus, distance = 122.49 meter Answer
Similar Questions
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(2) By running at a speed of 6 km/h how much distance a motor bike will cover in 8 second?
(3) By running at a speed of 40 km/h how much distance a cyclist will cover in 6 second?
(4) At a certain speed a cyclist covers a distance of 88 km in 3 hours. How much distance will it cover in 4 hour?
(5) By running at a speed of 15 km/h how much distance a cyclist will cover in 6 second?
(6) At a certain speed a car covers a distance of 30 km in 2 hours. How much distance will it cover in 3 hour?
(7) By running at a speed of 38 km/h how much distance a motor bike will cover in 8 second?
(8) If a cyclist takes 5 hours to cover a distance of 30 km, then what will be his speed in meter per minute?
(9) Find the distance covered by a bus in 24 hours if it covers a distance of 76 km in 14 hours.
(10) By running at a speed of 34 km/h how much distance an athlete will cover in 10 second?