Acar moved a total distance of 120 km in 90 minutes. what was the speed of the car?

80 km/hr

Explanation:

We are given that

Total distance covered by the car=120 Km

Time taken by the car=90 minutes=

We have to find the speed of the car

We know that Speed=

Substitute the value then, we get

Speed=

Hence, the speed of the car=80 km per hour.

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acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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