Question

A CAR TRAVELS a certain distance from a to b with a speed of 60 km/h and return to starting point with a speed of 40 km/hr calculate
a)average speed
b) average velocity of whole journey
urgent plz give answer














0

Answer 1

Answer:

Average speed =48 km/h

Average velocity =0

Explanation:

Total distance = d + d = 2d

Time taken = (d/60) + (d/40) = 0.04167 d

Average speed = total distance/ total time taken

Average speed = 2d/0.04167d = 48 km/h

Net displacement = 0 (zero) [from point A to A]

Therefore Average velocity = 0 km/h

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Answer 2

Answer:

a car travels certain distance between a to b speed 60 km /h

and returning point with starting point speed 4o km / h the Average speed is 60_40

40 = 20

the average speed is 20+40 = 50

the total speed 50+50

I hope you are understand