Question:
By running at a speed of 23 km/h how much distance a motor bike will cover in 8 second?
Correct Answer
51.12 meter
Solution And Explanation
Solution
Given,
Speed = 23 km/h
Time = 8 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, 23 km/h = 23 × 5/18 m/s
= 23 × 5/18 m/s
= 115/18 = 6.39 m/s
Thus, speed = 6.39 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 6.39 m/s × 8 s = 51.12 m
Thus, distance = 51.12 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 6.39 meter
∴ In 8 second, the distance covered = 6.39 m × 8 = meter
Thus, distance = 51.12 meter Answer
Similar Questions
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(2) Find the distance covered by a motor bike in 23 hours if it covers a distance of 54 km in 13 hours.
(3) At a certain speed a scooty covers a distance of 42 km in 4 hours. How much distance will it cover in 5 hour?
(4) At a certain speed a scooty covers a distance of 46 km in 4 hours. How much distance will it cover in 5 hour?
(5) Find the distance covered by a car in 20 hours if it covers a distance of 78 km in 10 hours.
(6) If a cyclist covers a distance of 28 km in 7 hours, then how much distance will he cover in 5 hour? And what is his speed?
(7) By running at a speed of 39 km/h how much distance a cyclist will cover in 6 second?
(8) By running at a speed of 37 km/h how much distance a cyclist will cover in 6 second?
(9) At a certain speed a car covers a distance of 74 km in 2 hours. How much distance will it cover in 3 hour?
(10) By running at a speed of 12 km/h how much distance a cyclist will cover in 6 second?