3 years ago

It takes 180 kj of work to accelerate a car from 21.0 m/s to 27.0 m/s. what is the car's mass?

Physics

1 answer:

beks73 [17]3 years ago

4 0

558888544446556313321

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A neighbor's child wants to go to a neighborhood carnival to experience the wild rides. The neighbor is worried about safety as

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Answer:

No, the ride is not safe

Explanation:

From the diagram attached, it is seen that

$\sum f_{y} = 0$

$\tau cos \theta - W = 0$ ................(1)

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$-ma + \tau sin \theta = 0$ .......(2)

$a = w^{2} r$

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$a = w^{2} L sin \theta$

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Put (3) into (2)

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L = 30 ft

T = 3 secs

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