Question

A car travels a distance of 2000m if the first half distance is covered at 40km/h ando the second half with speed very and the average speed is 48km/h than the value of v

Answer 1

V(avg) = [d1 + d2] /[t1 +t2]

48 = [d/2 + d/2] / [(d/2)/40 +(d/2)/V]

48 = 2 / [1/40 + 1/V]

48 = 80V/40+V

48V + 48(40) = 80V

1920= 32V

V = 60km/h

Answer 2

Answer:

Explanation:

Average velocity= total distance/total

time

48=2000/(1000/40)+

(1000/v)

=>80v/40+v=48

=> 48v+40.48=80v

=> 48v+1920=80v

=>1920=32v

Therefore v=60

Answer Velocity (v) =60km/h