Question

a car moves towards north at a speed of 54km/ h for 1h. Then it moves eastwards with same speed for same duration.The average speed and velocity of car complete journey is


please solve in detail

Answer 1

Average speed =total distance traveled by the car/ total time taken by the car
54km/s =54*5/18=15m/s
Average speed = 15*t +15*t/t+t=30/2=15m/s
Average velocity = Displacement /time
Here Displacement =15root 2* t
Because it's make right angle triangle
So average velocity = 15root 2*t/t+t=15/root2 m/s

Answer 2

Answer:

Average Speed = 15m/s

Average velocity = 15/√2 m/s

Explanation:

Explanation in the attachment

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