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aalyn [17]
3 years ago
9

The exact speed of an object in a specific instant is?

Physics
2 answers:
GarryVolchara [31]3 years ago
3 0
Im not so sure but it should be the
instantaneous speed 

sertanlavr [38]3 years ago
3 0
Instantaneous Speed.
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Answer:

Incomplete question, check attachment for completed question

Explanation:

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Will give brainlist!! Please help!!
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3 years ago
A(n) 30 kg boy rides a roller coaster. The acceleration of gravity is 9.8 m/s 2 . With what force does he press against the seat
forsale [732]

Answer:

Force, F = 187.42 N

Explanation:

It is given that,

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Speed of the car, v = 7.3 m/s

The force acting on the boy are force of gravity and the centripetal force. The net force acting on him is as follows :

F=mg-\dfrac{mv^2}{r}

F=m(g-\dfrac{v^2}{r})

F=30\times (9.8-\dfrac{(7.3)^2}{15})

F = 187.42 N

So, he press against the seat with a force is 187.42 N. Hence, this is the required solution.

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An example of forced convection is the movement of hot air by a fan. true or false?
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