Question:
By running at a speed of 28 km/h how much distance a scooty will cover in 7 second?
Correct Answer
54.46 meter
Solution And Explanation
Solution
Given,
Speed = 28 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, 28 km/h = 28 × 5/18 m/s
= 28 × 5/18 m/s
= 140/18 = 7.78 m/s
Thus, speed = 7.78 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 7.78 m/s × 7 s = 54.46 m
Thus, distance = 54.46 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 7.78 meter
∴ In 7 second, the distance covered = 7.78 m × 7 = meter
Thus, distance = 54.46 meter Answer
Similar Questions
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(2) By running at a speed of 26 km/h how much distance a car will cover in 5 second?
(3) At a certain speed a scooty covers a distance of 62 km in 4 hours. How much distance will it cover in 5 hour?
(4) At a certain speed a cyclist covers a distance of 46 km in 3 hours. How much distance will it cover in 4 hour?
(5) By running at a speed of 49 km/h how much distance a cyclist will cover in 6 second?
(6) Find the distance covered by a cyclist in 21 hours if it covers a distance of 74 km in 11 hours.
(7) At a certain speed a cyclist covers a distance of 74 km in 3 hours. How much distance will it cover in 4 hour?
(8) By running at a speed of 4 km/h how much distance a scooty will cover in 7 second?
(9) Find the distance covered by a car in 20 hours if it covers a distance of 66 km in 10 hours.
(10) Find the distance covered by a scooty in 22 hours if it covers a distance of 52 km in 12 hours.