4. A car covers covers first 50 km at a uniform velocity 45 km/h and the next 50 km at 90 km/h. Find the average velocity of the car.
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The initial velocity of the car (u)= 45km/hr
The final velocity of the car (v)= 90km/hr
Average velocity = u+v/2
= 45 +90 / 2
= 135 / 2
= 67.5 km/hr
The final velocity of the car (v)= 90km/hr
Average velocity = u+v/2
= 45 +90 / 2
= 135 / 2
= 67.5 km/hr
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