Question:
By running at a speed of 31 km/h how much distance a scooty will cover in 7 second?
Correct Answer
60.27 meter
Solution And Explanation
Solution
Given,
Speed = 31 km/h
Time = 7 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, 31 km/h = 31 × 5/18 m/s
= 31 × 5/18 m/s
= 155/18 = 8.61 m/s
Thus, speed = 8.61 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 8.61 m/s × 7 s = 60.27 m
Thus, distance = 60.27 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 8.61 meter
∴ In 7 second, the distance covered = 8.61 m × 7 = meter
Thus, distance = 60.27 meter Answer
Similar Questions
(1) Find the distance covered by a car in 20 hours if it covers a distance of 98 km in 10 hours.
(2) Find the distance covered by a ball in 26 hours if it covers a distance of 66 km in 16 hours.
(3) By running at a speed of 23 km/h how much distance a scooty will cover in 7 second?
(4) By running at a speed of 43 km/h how much distance a car will cover in 5 second?
(5) At a certain speed a cyclist covers a distance of 36 km in 3 hours. How much distance will it cover in 4 hour?
(6) Find the distance covered by a cricket ball in 27 hours if it covers a distance of 62 km in 17 hours.
(7) By running at a speed of 25 km/h how much distance a motor bike will cover in 8 second?
(8) By running at a speed of 12 km/h how much distance a motor bike will cover in 8 second?
(9) By running at a speed of 24 km/h how much distance a cyclist will cover in 6 second?
(10) By running at a speed of 38 km/h how much distance a car will cover in 5 second?