Time and Distance
Math MCQs

Question :    By running at a speed of 45 km/h how much distance an athlete will cover in 10 second?

Correct Answer  125 meter

Solution & Explanation

Solution

Given,

Speed = 45 km/h

Time = 10 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, 45 km/h = 45 × ⁵/₁₈ m/s

= ^{45 × 5}/₁₈ m/s

= ²²⁵/₁₈ = 12.5 m/s

Thus, speed = 12.5 m/s

Calculation of distance using formula

Formula to calculate distance when speed and time are given

Distance = Speed × Time

⇒ Distance = 12.5 m/s × 10 s = 125 m

Thus, distance = 125 meter Answer

Calculation of distance using Unitary Method

∵ In 1 second the distance covered = 12.5 meter

∴ In 10 second, the distance covered = 12.5 m × 10 = meter

Thus, distance = 125 meter Answer

Similar Questions

(1) By running at a speed of 21 km/h how much distance a motor bike will cover in 8 second?

(2) By running at a speed of 43 km/h how much distance a car will cover in 5 second?

(3) By running at a speed of 19 km/h how much distance a scooty will cover in 7 second?

(4) Find the distance covered by an athlete in 25 hours if it covers a distance of 70 km in 15 hours.

(5) By running at a speed of 8 km/h how much distance a motor bike will cover in 8 second?

(6) By running at a speed of 9 km/h how much distance a car will cover in 5 second?

(7) At a certain speed a scooty covers a distance of 4 km in 4 hours. How much distance will it cover in 5 hour?

(8) At a certain speed a scooty covers a distance of 74 km in 4 hours. How much distance will it cover in 5 hour?

(9) At a certain speed a cyclist covers a distance of 90 km in 3 hours. How much distance will it cover in 4 hour?

(10) By running at a speed of 22 km/h how much distance a scooty will cover in 7 second?