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Zarrin [17]
2 years ago
12

if a body moves with 20 km per hour in first 1 hour 30 km per hour in second one hour 40 kilometre per hour in third one hour wh

at os the average speed of body​
Physics
1 answer:
7nadin3 [17]2 years ago
4 0

Answer:

3pkm per hour

Explanation:

average is 30 km per hour

20 + 30 + 40= 90

90/3= 30

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The given parameters;

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h = \frac{1}{2} gt^2\\\\h = (0.5\times 9.8\times 3^2)\\\\h = 44.1\ m

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Learn more here:brainly.com/question/5868480

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