Question

if a particle travells with speed v1 during first half time interval and with speed v2 during second half time interval.Find its average speed during its journey.​

Answer 1

average speed is total distance travelled divided by Time interval

let the total Tim be t

then

average speed=(V1t/2+V2t)2)/t

=(V1+V2)/2

hope it helps

Answer 2

let the total time be t

total distance travelled=V1t/2 +V2t/2

total time =t

average speed=(V1+V2)/2

AA question pe.....