Time and Distance
Math MCQs

Question :    By running at a speed of 20 km/h how much distance a motor bike will cover in 8 second?

Correct Answer  44.48 meter

Solution & Explanation

Solution

Given,

Speed = 20 km/h

Time = 8 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, 20 km/h = 20 × ⁵/₁₈ m/s

= ^{20 × 5}/₁₈ m/s

= ¹⁰⁰/₁₈ = 5.56 m/s

Thus, speed = 5.56 m/s

Calculation of distance using formula

Formula to calculate distance when speed and time are given

Distance = Speed × Time

⇒ Distance = 5.56 m/s × 8 s = 44.48 m

Thus, distance = 44.48 meter Answer

Calculation of distance using Unitary Method

∵ In 1 second the distance covered = 5.56 meter

∴ In 8 second, the distance covered = 5.56 m × 8 = meter

Thus, distance = 44.48 meter Answer

Similar Questions

(1) By running at a speed of 12 km/h how much distance a bus will cover in 9 second?

(2) By running at a speed of 38 km/h how much distance a scooty will cover in 7 second?

(3) At a certain speed a cyclist covers a distance of 30 km in 3 hours. How much distance will it cover in 4 hour?

(4) By running at a speed of 33 km/h how much distance a motor bike will cover in 8 second?

(5) Find the distance covered by a car in 20 hours if it covers a distance of 78 km in 10 hours.

(6) At a certain speed a car covers a distance of 94 km in 2 hours. How much distance will it cover in 3 hour?

(7) Find the distance covered by a car in 20 hours if it covers a distance of 90 km in 10 hours.

(8) By running at a speed of 35 km/h how much distance a car will cover in 5 second?

(9) Find the distance covered by a cyclist in 21 hours if it covers a distance of 92 km in 11 hours.

(10) By running at a speed of 28 km/h how much distance a car will cover in 5 second?