Question:
By running at a speed of 9 km/h how much distance a bus will cover in 9 second?
Correct Answer
22.5 meter
Solution And Explanation
Solution
Given,
Speed = 9 km/h
Time = 9 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 × 9 s = 22.5 m
Thus, distance = 22.5 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 2.5 meter
∴ In 9 second, the distance covered = 2.5 m × 9 = meter
Thus, distance = 22.5 meter Answer
Similar Questions
(1) Find the distance covered by a car in 20 hours if it covers a distance of 68 km in 10 hours.
(2) By running at a speed of 40 km/h how much distance a bus will cover in 9 second?
(3) At a certain speed a cyclist covers a distance of 40 km in 3 hours. How much distance will it cover in 4 hour?
(4) By running at a speed of 18 km/h how much distance a bus will cover in 9 second?
(5) By running at a speed of 33 km/h how much distance an athlete will cover in 10 second?
(6) After spotting a deer at a distance of 500 m, a tiger takes 1 minute 05 second to catch the prey. If after spotting the deer, the tiger takes about 15 second in thinking and then starts running, then find the speed of the tiger in kilometre per hour.
(7) By running at a speed of 48 km/h how much distance a car will cover in 5 second?
(8) Find the distance covered by a cyclist in 21 hours if it covers a distance of 82 km in 11 hours.
(9) By running at a speed of 49 km/h how much distance an athlete will cover in 10 second?
(10) At a certain speed a cyclist covers a distance of 100 km in 3 hours. How much distance will it cover in 4 hour?