Question

a car travels from A to B at 60km/Hr and returns to A at 90km/Hr. what is the average velocity and average speed of the car

Answer 1

⛦Hᴇʀᴇ Is Yoᴜʀ Aɴsᴡᴇʀ⚑
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Let be the distance from A to B be x

Given,
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➧ Speed from A to B 60 km/ hr and from B to A 90 km/ hr .

➧ Total distance = x + x = 2x

➧ Time from A to B = 60 / x
& from B to A = 90 / x

➧ Total time = 60 / x + 90 / x

➧ Average velocity for non-uniform speed
=> total distance / total time

➾ 2x / 60 / x + 90 / x

➾ 2x / 60 + 90 / x

➾ 60 + 90 / 2

➾ 75 km/ hr...✔

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Thanks...✊