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a)A car initially traveling at 31.7 m/s undergoes a constant negative acceleration of magnitude 1.60 m/s2...

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Physics

a)A car initially traveling at 31.7 m/s undergoes a constantnegative acceleration of magnitude 1.60 m/s2 after itsbrakes are applied.

-How many revolutions does each tire make before the car comesto a stop, assuming the car does not skid and the tires have radiiof 0.310 m? ______ rev

-What is the angular speed of the wheels when the car hastraveled half the total distance? _______ rad/s

b) A 50.0-kg child stands at the rim of a merry-go-round ofradius 2.45 m, rotating with an angular speed of 3.80 rad/s.

-what is the child's centripetal acceleration? _______ m/s^2

-what is the minimum force between her feet and the floor of thecarousel that is required to keep her in the circular path? _____N

-what minimum coefficient of static friction is required?

Answer & Explanation Solved by verified expert
4.0 Ratings (706 Votes)
a given u initial velocity 317 msa 160 ms2r 0310 mtangential acceleration initial angular velocity    See Answer
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