An object moves 360 km in 2 hours calculate its speed into km/h and m/s

Physics

2 answers:

erik [133]2 years ago

5 0

Explanation:

Speed= Distance / time

Speed= 360/2

= 180 km/h

Speed= 180 × 5/18

= 50 m/s

hope it helps

wariber [46]2 years ago

5 0

50 m/s is the answer to your question

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A 60-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and that the

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Answer:

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part (b). 197381 J

Explanation:

Given,

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part (a)

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mass of the small element of the chain = $\rho dy$

Work done due to the small element,

$dw\ =\ \rho g (60\ -\ y)dy\\$

Total work done to wind the entire chain = w

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