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
Answers
Answered by
37
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
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
Answered by
4
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
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