Question:
By running at a speed of 9 km/h how much distance a scooty will cover in 7 second?
Correct Answer
17.5 meter
Solution And Explanation
Solution
Given,
Speed = 9 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, 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 × 7 s = 17.5 m
Thus, distance = 17.5 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 2.5 meter
∴ In 7 second, the distance covered = 2.5 m × 7 = meter
Thus, distance = 17.5 meter Answer
Similar Questions
(1) By running at a speed of 6 km/h how much distance a cyclist will cover in 6 second?
(2) By running at a speed of 50 km/h how much distance a cyclist will cover in 6 second?
(3) At a certain speed a scooty covers a distance of 76 km in 4 hours. How much distance will it cover in 5 hour?
(4) By running at a speed of 49 km/h how much distance a cyclist will cover in 6 second?
(5) By running at a speed of 35 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 56 km in 11 hours.
(7) At a certain speed a scooty covers a distance of 48 km in 4 hours. How much distance will it cover in 5 hour?
(8) Find the distance covered by a motor bike in 23 hours if it covers a distance of 100 km in 13 hours.
(9) Find the distance covered by a cyclist in 21 hours if it covers a distance of 50 km in 11 hours.
(10) If a car is running with a speed of 60 km/h, then how much distance will it cover in 15 minute 20 second?