Question : By running at a speed of 42 km/h how much distance a scooty will cover in 7 second?
Correct Answer 81.69 meter
Solution & Explanation
Solution
Given,
Speed = 42 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, 42 km/h = 42 × 5/18 m/s
= 42 × 5/18 m/s
= 210/18 = 11.67 m/s
Thus, speed = 11.67 m/s
Calculation of distance using formula
Formula to calculate distance when speed and time are given
Distance = Speed × Time
⇒ Distance = 11.67 m/s × 7 s = 81.69 m
Thus, distance = 81.69 meter Answer
Calculation of distance using Unitary Method
∵ In 1 second the distance covered = 11.67 meter
∴ In 7 second, the distance covered = 11.67 m × 7 = meter
Thus, distance = 81.69 meter Answer
Similar Questions
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(2) Find the distance covered by a bus in 24 hours if it covers a distance of 82 km in 14 hours.
(3) Find the distance covered by a ball in 26 hours if it covers a distance of 54 km in 16 hours.
(4) By running at a speed of 50 km/h how much distance a scooty will cover in 7 second?
(5) By running at a speed of 33 km/h how much distance an athlete will cover in 10 second?
(6) By running at a speed of 24 km/h how much distance a motor bike will cover in 8 second?
(7) Find the distance covered by a car in 20 hours if it covers a distance of 54 km in 10 hours.
(8) Find the distance covered by a scooty in 22 hours if it covers a distance of 62 km in 12 hours.
(9) By running at a speed of 7 km/h how much distance an athlete will cover in 10 second?