Question:
By running at a speed of 2 km/h how much distance a scooty will cover in 7 second?
Correct Answer
3.92 meter
Solution And Explanation
Solution
Given,
Speed = 2 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, 2 km/h = 2 × 5/18 m/s
= 2 × 5/18 m/s
= 10/18 = 0.56 m/s
Thus, speed = 0.56 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 0.56 m/s × 7 s = 3.92 m
Thus, distance = 3.92 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 0.56 meter
∴ In 7 second, the distance covered = 0.56 m × 7 = meter
Thus, distance = 3.92 meter Answer
Similar Questions
(1) At a certain speed a cyclist covers a distance of 18 km in 3 hours. How much distance will it cover in 4 hour?
(2) At a certain speed a scooty covers a distance of 24 km in 4 hours. How much distance will it cover in 5 hour?
(3) By running at a speed of 39 km/h how much distance a car will cover in 5 second?
(4) By running at a speed of 7 km/h how much distance an athlete will cover in 10 second?
(5) An athlete takes 1 minute 20 second to complete a race of 1000 meter. Find the speed of the athlete in kilometre per hour.
(6) Find the distance covered by a cricket ball in 27 hours if it covers a distance of 72 km in 17 hours.
(7) At a certain speed a car covers a distance of 10 km in 2 hours. How much distance will it cover in 3 hour?
(8) By running at a speed of 5 km/h how much distance a bus will cover in 9 second?
(9) At a certain speed a car covers a distance of 6 km in 2 hours. How much distance will it cover in 3 hour?
(10) At a certain speed a car covers a distance of 60 km in 2 hours. How much distance will it cover in 3 hour?