Just the answer only For questions 31 and 32, refer to the followingsituation.31. A girl throws a ball of plasticine verticallyupwards. The ball goes up and eventuallyreturns to the girl. The starting speed of the ballis 20 m s-¹.Which of the following speed-time graphs bestrepresents the motion of the ball? (Neglect airresistance)в уACy32. Assuming that the acceleration due to gravity gto be 10 m s-2, when will the ball return to thethrower?1sAC 4 s20 mI33. Two similar balls are released from a 40 mbuilding at the same time. One falls from thetop while the other from half way up as shownbelow.I11DVCD Time of travelB 2 s10 sDIncrease in speedINDIINSIMEIMAINimplimeinimCAmWhich quantity is the same for both balls?A AccelerationB Final velocity40 m34. Which of the following does not illustrateuniform motion?A A ball rolls along a frictionless surface.A mass is thrown vertically upwards with aspeed of 10 m s-¹.B)C A lift moves vertically upwards past fivefloors at zero acceleration.DA boy runs 70 m along a straight track at aconstant speed. 835. The graph shows how the speed of an objectvaries with time.velocity/m s-¹B30-CD20---..10-Which of the following is correct?A The average speed of the object during thefirst 4 seconds is 20 m s-¹.The acceleration of the object during thefirst second is 20 m s-².The deceleration of the object is 10 m s-².The object is traveling at a constant speedduring the last second.( )4time/s36. A trolley runs down a slope from rest. In thefirst 3 seconds it travels 3.2 m. What is theconstant acceleration?A 0.2 m s-²C 0.7 m s-2SB 0.4 m s-²D 1.6 m s-²( )37. The velocity-time graph of an object is shown inthe diagram below. Which one of the followingis not correct?velocitylenou6timeA The object is under uniform acceleration.The gradient of the graph is the accelerationof the object. @BCThe area S is the total distance travelled intime t.DThe object starts from rest.CHAPTER 2: Kinematics 15

Name: Just the answer only For questions 31 and 32, refer to the followingsi
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Description: Just the answer only For questions 31 and 32, refer to the followingsituation.31. A girl throws a ball of plasticine verticallyupwards. The ball goes up and eventuallyreturns to the girl. The starting speed of the ballis 20 m s-¹.Which of the followi