2023 XMS P1 PRELIM QP

2 6091/Physics/Paper 1/2023 Prelim 1 Hooke’s law states that the force, F needed to extend or compress a spring by a distance, x is given by the formula, where k is a constant. F = kx Which is the S.I. unit for constant k? A kg m-1 s-1 B kg m-1 s-2 C kg s-1 D kg s-2 2 The graph below shows the velocity – time graph of a cyclist. What is the average speed of the cyclist? A 5.3 m s-1 B 6.7 m s-1 C 6.9 m s-1 D 8.0 m s-1 3 An object falls from rest through air until it reaches terminal velocity. What can be said about the acceleration of the object during the fall? A constant at 10 m s-2 B increases from zero to 10 m s-2 C decreases from 10 m s-2 to zero D zero acceleration

3 6091/Physics/Paper 1/2023 Prelim 4 A car drives at a constant speed around the racing track JKLM as shown below. Along which sections of the racing track will the car experience a resultant force? A JK and LM B JK and KL C KL and MJ D LM and MJ 5 A woman stands in a lift that is accelerating upwards at 0.75 m s-2. She has a mass of 52 kg. What is the normal reaction force exerted on her by the floor during the motion? A 390 N B 481 N C 520 N D 559 N 6 The diagram below shows two objects on a beam balance. The beam balance is in equilibrium. Which of the following quantities may be different in magnitude? A the masses of the two objects B the moments about the pivot of the two objects C the volume of the two objects D the weights of the two objects pivot

4 6091/Physics/Paper 1/2023 Prelim 7 A wooden block of dimension 1.0 m by 1.0 m by 1.0 m has a mass of 800 kg. If a boy saws half the block away, what is the density of the remaining wooden block? A 400 kg m-3 B 800 kg m-3 C 1200 kg m-3 D 1600 kg m-3 8 The diagram shows a balancing toy pivoted on a stand. If the toy is tilted slightly, it does not topple but returns to its original position. This is because the centre of gravity of the toy is A inside the weight. B below the pivot. C exactly at the pivot. D between the weight and pivot. 9 The diagram below shows a bar pivoted to a point closer to one end. Assuming that the forces applied on the bar are of equal magnitude, which force would produce the moment with the greatest magnitude? aeroplanes weight pivot stand

5 6091/Physics/Paper 1/2023 Prelim 10 The diagram below shows a cube suspended from a string being submerged in a liquid. The cube experiences a pressure caused by the liquid. What would increase the pressure acting on bottom surface of the cube? A lowering the cube deeper into the liquid B increasing the mass of the cube C decreasing the bottom surface area of the cube D using a liquid with a lower density 11 The system shown in the diagram contains an incompressible liquid. A downward force of 3.0 N is exerted on piston L. What