Questions ions: (questions (1-4; 5 Points Each & Others are 20 points each) the
ID: 1583850 • Letter: Q
Question
Questions ions: (questions (1-4; 5 Points Each & Others are 20 points each) the correct answer of the following and show your work to get full credit 1. A pojectile is fred at an angle of 4S above the horisontal Assume that air resistance is not signifioant. while the projiectile is in flight, which component of the velocity remain constant? a Vetical Compon e None of the above 2 A small sphere is swwng in a vertical circle. Which of the following combinations represents the direction ofthe velocity and celeration ak lbe boom of the einele? v 3. Acconding to Newton's First Law of motion a moving object that is not acted on by an unbalanced force will Remain in motion a. b. Eventually come to a rest Change its momentum Accelerate c. . e None of the above The coefficient of static friction is 4. a. Less than the coefficient of kinetic friction b. Greater than the coefficient of limiting friction e. Equal to coefficient of kinetic friction d. Equal to the tangent of the angle of fhriction e. None of the above Page 2 of ?Explanation / Answer
1) since acceleration due to gravity acts only in vertical direction so horizonal component of velocity remains constant.
2) velocity is on tangential direction whereas acceleration is radially inward. So option B is correct.
3) according to Newton's first law object will be in the same state of no external force is acting on this so it will remain in motion. So option A is correct.
4) equal to the tangent of the angle of friction.
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