Question

A motor cycle covers the distance of 140m. in 19 seconds.find its speed per hour in kms​

Answer 1

Answer:

504/19km/hr

Step-by-step explanation:

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Speed = Distance / time

           = (140/19)m/s

Now, we have to multiply it 18/5 to convert it in km/hr,

(140/19)*(18/5)=28 *18/19 = 504/19 km/hr

Answer 2

The speed of motor cycle in per hour in kms​ = 26.526 $\dfrac{km}{hr}$

Step-by-step explanation:

Given,

The total distance (D) = 140 m and

Time (T) = 19 seconds

To find, the speed of motor cycle in per hour in kms​ = ?

We know that,

Speed = $\dfrac{Distance}{Time}$

= $\dfrac{140}{19} \dfrac{m}{s}$

= $\dfrac{140}{19} \times \dfrac{18}{5} \dfrac{km}{hr}$

= $\dfrac{28}{19} \times18 \dfrac{km}{hr}$

= $\dfrac{504}{19} \dfrac{km}{hr}$

= 26.526 $\dfrac{km}{hr}$

∴ The speed of motor cycle in per hour in kms​ = 26.526 $\dfrac{km}{hr}$