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Pani-rosa [81]
3 years ago
9

What is the acceleration of an object that has a velocity of 18 m/s and is moving in a circle of radius 30m?

Physics
2 answers:
blsea [12.9K]3 years ago
5 0
Acceleration = V^2/r = 18^2/ 30 = 10.8 m/s^2
insens350 [35]3 years ago
4 0

Well, first of all, 18 m/s is the object's speed, but not its velocity.
Velocity consists of the object's speed AND direction, and this
particular object's direction is constantly changing, since it's
moving around a circle.  So its velocity is constantly changing too.

Centripetal acceleration  =  (speed)² / (radius)

                                           =  (18 m/s)² / (30 m)

                                           = (324 m²/s²) / (30 m)

                                           =       10.8 m/s²

                                       (about  1.1 G)   
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Answer:

a) Therefore 2.6km is greater than 2.57km.

Statement A is greater than statement B.

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Statement A is equal to statement B

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a) Statement A : 2.567km to two significant figures.

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Statement B : 2.567km to three significant figures.

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Statement A is greater than statement B.

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Statement B : (2.567 km, to two significant figures) + (3.146 km, to two significant figures).

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5 0
2 years ago
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Answer:

C or 3

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