Question

4.
A car moves north with speed 15 m/s for 1 hour.
Then it moves eastwards with same speed for
another 1 hour. Then the average speed and average
velocity of car for t = 0 to t = 2 hours is
(1) 0,54 m/s
127 15 m/s,
m/s
V2
(3) O.
km/hr
(4) 0,0​

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

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