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
(1) By running at a speed of 10 km/h how much distance a cyclist will cover in 6 second?
(2) At a certain speed a scooty covers a distance of 78 km in 4 hours. How much distance will it cover in 5 hour?
(3) By running at a speed of 42 km/h how much distance a motor bike will cover in 8 second?
(4) Find the distance covered by an athlete in 25 hours if it covers a distance of 96 km in 15 hours.
(5) By running at a speed of 27 km/h how much distance a car will cover in 5 second?
(6) By running at a speed of 49 km/h how much distance a motor bike will cover in 8 second?
(7) Find the distance covered by a cyclist in 21 hours if it covers a distance of 100 km in 11 hours.
(8) At a certain speed a cyclist covers a distance of 38 km in 3 hours. How much distance will it cover in 4 hour?
(9) Find the distance covered by a ball in 26 hours if it covers a distance of 52 km in 16 hours.
(10) Find the distance covered by a bus in 24 hours if it covers a distance of 72 km in 14 hours.