Question:
( 1 of 10 ) By running at a speed of 49 km/h how much distance a bus will cover in 9 second?
(A) 65 years and 36 years
(B) 67 years and 19 years
(C) 86 years and 48 years
(D) 43 years and 24 years
You selected
61.245 meter
Correct Answer
122.49 meter
Solution And Explanation
Solution
Given,
Speed = 49 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, 49 km/h = 49 × 5/18 m/s
= 49 × 5/18 m/s
= 245/18 = 13.61 m/s
Thus, speed = 13.61 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 13.61 m/s × 9 s = 122.49 m
Thus, distance = 122.49 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 13.61 meter
∴ In 9 second, the distance covered = 13.61 m × 9 = meter
Thus, distance = 122.49 meter Answer
Similar Questions
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(2) Find the distance covered by a ball in 26 hours if it covers a distance of 92 km in 16 hours.
(3) By running at a speed of 48 km/h how much distance a car will cover in 5 second?
(4) At a certain speed a car covers a distance of 20 km in 2 hours. How much distance will it cover in 3 hour?
(5) By running at a speed of 33 km/h how much distance a motor bike will cover in 8 second?
(6) By running at a speed of 33 km/h how much distance an athlete will cover in 10 second?
(7) By running at a speed of 35 km/h how much distance an athlete will cover in 10 second?
(8) An athlete takes 15 hours to finish a race of 75 km. Calculate the speed of athlete in meter per second.
(9) By running at a speed of 45 km/h how much distance a cyclist will cover in 6 second?
(10) By running at a speed of 35 km/h how much distance a motor bike will cover in 8 second?