Question

A car travels half of the distance with the velocity of 30m/sec and next half with the velocity of 50m/sec . find out the average velocity of the car for the entire journey?​

Answer 1

Answer:

Let the total distance be 2x.

For first half distance :

Speed  is 20 m/s

Thus time taken   t  

1

​  

=  

20

x

​  

 

For second half distance :

Speed  is 30 m/s

Thus time taken   t  

2

​  

=  

30

x

​  

 

Average velocity   V  

avg

​  

=  

t  

1

​  

+t  

2

​  

 

2x

​  

 

⟹ V  

avg

​  

=  

20

x

​  

+  

30

x

​  

 

2x

​  

=  

20+30

2×20×30

​  

=24 m/s