Question:
By running at a speed of 9 km/h how much distance an athlete will cover in 10 second?
Correct Answer
25 meter
Solution And Explanation
Solution
Given,
Speed = 9 km/h
Time = 10 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, 9 km/h = 9 × 5/18 m/s
= 9 × 5/18 m/s
= 45/18 = 2.5 m/s
Thus, speed = 2.5 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 2.5 m/s × 10 s = 25 m
Thus, distance = 25 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 2.5 meter
∴ In 10 second, the distance covered = 2.5 m × 10 = meter
Thus, distance = 25 meter Answer
Similar Questions
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(2) At a certain speed a scooty covers a distance of 52 km in 4 hours. How much distance will it cover in 5 hour?
(3) At a certain speed a scooty covers a distance of 62 km in 4 hours. How much distance will it cover in 5 hour?
(4) At a certain speed a cyclist covers a distance of 16 km in 3 hours. How much distance will it cover in 4 hour?
(5) By running at a speed of 22 km/h how much distance a cyclist will cover in 6 second?
(6) Find the distance covered by a bus in 24 hours if it covers a distance of 100 km in 14 hours.
(7) By running at a speed of 42 km/h how much distance a scooty will cover in 7 second?
(8) Find the distance covered by an athlete in 25 hours if it covers a distance of 94 km in 15 hours.
(9) By running at a speed of 25 km/h how much distance a scooty will cover in 7 second?
(10) If a car is running with a speed of 90 km/h, then how much distance will it cover in 1 hour 15 minute?