Please help me :) m long string describes a horizontal circle28. What is the centripetal acceleration of the object?c. 7.5 m/s2a.1.2 m/s2d. 3.2 m/s2b.3 m/s229. What is the centripetal force exerted on the object?1 N1.2 Nc. 0.2 Nd. 1.5 Na.b.30. When a student stands on a rotating table, the frictional foresexerted on the student by the table istable by the studentless in magnitude than the frictional force exerted on theb.table by the studentequal in magnitude than the frictional force exerted on theC.table by the studentd.directed away from the center of the table31. A child whirls a ball at the end of a rope, in a uniform circularmotion. Which of the following statements is NOT true?a. speed of the ball is constantb. radius is constantC. velocity of the ball is constantd. magnitude if the ball's acceleration is constant32.A centripetal force F is applied to an eraser moving at a constantspeed v in a horizontal circle of radius r. if the radius quadrupledand the speed is doubled, what happened to the centripetal force?a. increased by a factor of 2b. decreased by a factor of 2C. doesn't changed. Increased by a factor of v233. A centripetal force F is applied to an eraser moving at a constantspeed v in a horizontal circle of radius r. if the force is applied, butthe radius is halved, what happened to the centripetal force?a. increased by a factor of 2b. decreased by a factor of 2 5000 g/cm35000 ga.c. 0.005 g/cm3d. 0.00005 g/L3b.22.Alex drops a ball from rest from the top of 100 meter high cliff.How much time will it take for the ball reach the groundana.4.52 sC. 490 sb.0.22sd. 20.41 s23. A cannon ball is launched horizontally from the top of an 78.4meter high cliff. How much time will it take for the ball to theground?2 sb. 3 sC. 4 sd. 1sa.24. Which two angles will produce the same range?40 & 60 degrees45 & 15 degreesc. 30 & 60 degreesd. 35 & 65 degreesa.b.25. A ball is fastened to a string and is swung in a vertical circle.When the ball is at the highest point of the circle its velocity andacceleration directions are:a.с.aVb.d.V.aa26. A ball is fastened to a string and is swung in a vertical circle.When the ball is at the highest point of the circle the tension in thestring is: ?c. ma - mgd. mg/maa. mgb. mg + ma27. An object, shown in the accompanying figure, moves in uniformcircular motion. Which arrow best depicts the net force acting onthe object at the instant shown?с. Сa.Dd. Db. BA

28) Given data: The mass of the object, m=0.2 kg. The constant speed of rotation of the ball, v=3…

A 0.2 kg ball rotates at a constant speed of 3 m/s on the end of 1.2 m long string describes a horizontal circle. 28. What is the centripetal acceleration of the object? c. 7.5 m/s2 a. 1.2 m/s2 b. 3 m/s2 29. What is the centripetal force exerted on the object? d. 3.2 m/s? c. 0.2 N d. 1.5 N n student stands on a rotating table, the frictional force a. 1N b. 1.2 N able is

A 0.2 kg ball rotates at a constant speed of 3 m/s on the end of 1.2 m long string describes a horizontal circle. 28. What is the centripetal acceleration of the object? c. 7.5 m/s2 a. 1.2 m/s2 b. 3 m/s2 29. What is the centripetal force exerted on the object? d. 3.2 m/s? c. 0.2 N d. 1.5 N n student stands on a rotating table, the frictional force a. 1N b. 1.2 N able is

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 7P: A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed...

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