Question

The average speed of a car which covers half the distance with a speed of 30 m/s and other half with a speed of 50 m/s in equal intervals of time is ?

Answer 1

this can be your answer

Answer 2

A body covers half the distance with a speed of 20 m/s and other half with a speed of 30 m/s.What is the average velocity of the body?

I presume that by "speed", we mean "velocity" & that all velocity vectors here are in the same direction.

Distance = x mtrs

time takes is (x/2 /20) + (x/2 /30)

= x/40 + x/60 sec

= (3x/120 + 2x/120) sec

= 5x/120 seconds

|velocity| = speed = dist (x) / time (5x/120)

= 1m/(5/120)sec

=120/5 m/sec

= 24 m/s