Question

Distance= 720 m
Speed = 48 km/h
Find time = ? s

Answer 1

Answer:

Hence, value of time period will be 54 seconds

Step-by-step explanation:

In context to question asked,

We have to determine the value of time.

As per data,

We have,

Distance= 720 m

Speed = 48 km/h

As here,

distance is in m while speed is in km/h

So, we will convert speed in m/s

As we know that,

$\frac{Km}{Hr} =\frac{5}{18}\:\frac{m}{sec}$

So, we will put the value in above formula,

Thus we will get,

$48 \:Km/Hr=48\times \frac{5}{18}\:m/sec\\=\frac{240}{18}\:m/sec\\=>\frac{120}{9}\:m/sec$

As we know that,

$Speed =\frac{Distance}{time}$

So, for determining the value of time we will put value of speed and distance in above formula,

Thus we will get,

$Time =\frac{Distance}{Speed}\\=>Time =\frac{720}{\frac{120}{9}}\\=>Time = \frac{720\times 9}{120}\:sec.\\=>Time = 6\times 9 = 54\:seconds$

Answer 2

Here the distance and the speed is given

speed = 48 km/hr

distance = 720 m

We will first convert the distance in km

distance = 720 m

              = 720/1000 km

             = 0.72 km

We have to find the time taken to cover the distance

speed = distance/time

     48 = 0.72/time

 time =  0.72/48

        = 0.015  hour

Hence, the time taken will be 0.015 hour