SHOW YOUR COMPLETE SOLUTION AND WRITE YOUR SOLUTION ON A PAPER. Multiple Choice [2 pts each]. 1Write the CAPITAL LETTER of the correct answer. Show your solution for items involving problem solving. Ignore air resistance and assume acceleration due to gravity on the surface of the earth is 9.8 mfsz. 33. A 10-kg sled, loaded with 250-kg students, slides down a frictionless incline, 15 . from the horizontal. What is its acceleration? a. 3.0 m/s2 b. 25.3 m/s2 c. 2.53 m/s2 d. Cannot be determined 34. Which of the following is true regarding contact forces? I Normal force is always perpendicular to the surface. II Normal force is always directed upwards. III Frictional force is always parallel to the surface. IV Frictional force is always horizontal b. I and III only b. II and IV only C. I, II, III, IV d. None of the above 35. Which is true regarding frictional forces? I Static frictional force is always greater than kinetic frictional force. II The frictional force is at maximum when an object is just about to move/slide. III When an object is already moving, kinetic frictional force varies a lot. IV When an object is moving at constant velocity on a surface, the frictional force is zero. a. Ionly b. I and II only c. I, II, III only d. I, II, III, IV 36. There are different ways to reduce friction such as: a. Application of lubricant on rough surfaces b. Smoothening of surfaces c. Application of rollers d. All of the above 37. In a uniform circular motion (UCM), I At any point on the circle, the acceleration is directed towards the center. II The velocity of the object is constant. III The centripetal force is directly proportional to the square of the velocity. IV The centripetal force is independent on the mass of the object. a. I only b. I and II only c. I and III only d. I and IV only