1) a car of mass 999 kg traveling at 72.0 km/hour enters a flat(non-banked) and dry...

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Physics

1) a car of mass 999 kg traveling at 72.0 km/hour enters aflat(non-banked) and dry curve of radius 97.4 m. What is thecoefficient of static friction between the tires and the roadrequired to prevent the car from slipping ?
2) Shirin pushes a 27.1 kg crate a distance of 8.65 m along alevel floor at constant velocity by pushing downward at an angle of32.0 below the horizontal. The coefficient of kinetic frictionbetween the crate and floor is 0.370.
a) what magnitude of force must Shirin apply to move the crateat constant velocity ?
b) how much work does Shirin do on the crate, when it is pushedthis distance of 8.65 m?
3.) A soccer ball with mass 0.880 kg is initially moving withspeed 1.55 m/s. Marcus Rashford kicks the ball, exerting a constantforce of magnitude 97.0 N in the same direction as the ball'smotion. Over what distance must Marcus's foot be in contact withthe ball to increase the ball's speed to 8.33 m/s ?

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3.6 Ratings (283 Votes)

1 car mass M 999 kgcar speed v 72 kmhr 20 mscentrifugal force Fc Mv2RThe centrifugal force pushes the car away from the center Forthe car to See Answer

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