Question

A boy runs 4km to words east and then he runs to words left 5km.He takes 30min to run .then finds its average speed into m/s.​

Answer 1

Answer:

Step-by-step explanation:

Average speed of the boy v=4 km/h

Time taken t=  2 /1 hour

Distance D=?

 

We know that  Speed(v)=  Time(t) /Distance(D)

​

   ⇒Distance(D)=4×  2 /1

​

 

  ⇒Distance(D)=2 km

Answer 2

Answer:

Step-by-step explanation:

Average speed of the boy v=4 km/h

Time taken t=  

2

1

​

hour

Distance D=?

 

We know that  Speed(v)=  

Time(t)

Distance(D)

​

 

       ⇒Distance(D)=4×  

2

1

​

 

       ⇒Distance(D)=2 km