2024 ASRJC JC2 H1 Physics Prelim P1

1 8867/01/ASRJC/2024Prelim [Turn over Name: _____________________________ ( ) Class: 24 / ______ 2024 JC2 Preliminary Examination PHYSICS Higher 1 8867/01 Paper 1 Multiple Choice Monday 16 September 2024 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name and class on the Multiple Choice Answer Sheet. Shade and write your NRIC/FIN. There are thirty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Multiple Choice Answer Sheet. Read the instructions on the Multiple Choice Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this question paper. The use of an approved scientific calculator is expected, where appropriate. This document consists of 17 printed pages and 3 blank pages. ANDERSON SERANGOON JUNIOR COLLEGE

2 8867/01/ASRJC/2024Prelim Data speed of light in free space, c = 3.00  108 m s−1 elementary charge, e = 1.60  10−19 C unified atomic mass constant, u = 1.66  10−27 kg rest mass of electron, me = 9.11  10−31 kg rest mass of proton, mp = 1.67  10−27 kg the Avogadro constant NA = 6.02  1023 mol−1 gravitational constant G = 6.67  10−11 N m2 kg−2 acceleration of free fall, g = 9.81 m s−2 Formulae uniformly accelerated motion, s = ut + 1 2 at2 v2 = u2 + 2as resistors in series, R = R1 + R2 + … resistors in parallel, 1/R = 1/R1 + 1/R2 + …

3 8867/01/ASRJC/2024Prelim [Turn over 1 When a beam of light is incident on a surface, it delivers energy to the surface. The intensity of the beam is defined as the energy delivered per unit area per unit time. What is the unit of intensity, expressed in SI base units? A kg m–2 s–1 B kg m2 s–3 C kg s–2 D kg s–3 2 The diagram shows two vectors X and Y. In which vector triangle does the vector Z show the magnitude and direction of vector X – Y? A B C D X Y X Y Z X Y Z X Y Z X Y Z

4 8867/01/ASRJC/2024Prelim 3 Which pair of quantities contains one vector and one scalar quantity? A displacement; force B velocity; distance C acceleration; momentum D kinetic energy; power 4 An object falls 10.0 m from rest before entering some water. Assuming negligible air resistance, what is the time taken to reach the water and the speed with which the object reaches the water? time / s speed / m s–1 A 1.02 10.0 B 1.02 14.0 C 1.43 10.0 D 1.43 14.0

5 8867/01/ASRJC/2024Prelim [Turn over 5 When a car driver sees a hazard ahead, she applies the brakes as soon as she can and brings the car to rest. The graph shows how the speed v of the car varies with time t after hazard is seen. Which graph represents the variation with time t of the distance s travelled by the car after the hazard has been seen? A B C D

6 8867/01/ASRJC/2024Prelim 6 In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The stone reaches point Q just before landing. The vertical component of acceleration of the stone is A zero at T. B the same at Q as at T. C greatest at Q. D greatest at T. 7 A man is skiing down a slope with constant speed. According to Newton’s third law, which force makes an action−reaction pair with the weight of the man? A the friction from the slope B the normal contact force from the slope C the gravitational force on the Earth due to the man D the sum of normal contact force and friction from the slope 8 A mass of 8.0 kg, resting on a horizontal plane, is connected to a hanging mass of 2.0 kg. There is a frictional force of 5.0 N acting between the 8.0 kg mass and the plane. What is the acceleration of the 8.0 kg mass? A 1.5 m s2 B 1.8 m s2 C 2.0 m s2 D 2.5 m s2 smooth pulley 2.0 kg 8.0 kg

7 8867/01/ASRJC/2024Prelim [Turn over 9 A ball of mass 200 g is thrown horizontally with a speed of 20 m s1 against a vertical wall. The ball is in contact with the wall for a time of 0.10 s before rebounding back along its original path with a speed of 10 m s–1. What is the average force exerted by the wall on the ball during the collision? A 20 N B 60 N C 20 kN D 60 kN 10 A beam, the weight of which may be neglected, is supported by three identical springs. When a weight W is hung from the middle of the beam, the extension of each spring is x. The middle spring and the weight are removed. What is the extension when a weight of 2W is hung from the middle of the beam? A 1.3x B 1.5x C 2x D 3x 11 In which situation could the pair of forces applied to the rigid object produce a couple? x W original position of the beam

8 8867/01/ASRJC/2024Prelim 12 A ladder rests on rough ground and leans against a rough wall. Its weight W acts through the centre of gravity G. Forces also act on the ladder at P and Q. These forces are P and Q respectively. Which vector triangle represents the forces on the ladder? 13 A man drags an object of mass 5.0 kg up a plane inclined at 30° to the horizontal. It travelled through a vertical height of 12 m at a constant speed. The total work done by the man is 1500 J. What is the average friction force between the object and the plane? A 8.3 N B 38 N C 63 N D 88 N rough ground rough wall

9 8867/01/ASRJC/2024Prelim [Turn over 14 A man throws a ball vertically upwards. The ball reaches a maximum height, and then falls back into the man’s hand. Air resistance may be assumed to be negligible. Which graph shows how the kinetic energy E of the ball varies with the vertical displacement y? A B C D E y E y E y E y

10 8867/01/ASRJC/2024Prelim 15 The radius of Earth is 6.4 x 106 m. Singapore is on the Equator. Cambridge is at a latitude of 52° N, as shown in the diagram. A student at Singapore has centripetal acceleration aS because of the Earth’s rotation about its axis. The centripetal acceleration of another student at Cambridge is aC. What are the magnitudes of the centripetal accelerations? aS / m s−2 aC / m s−2 A 3.4 x 10−2 2.1 x 10−2 B 3.4 x 10−2 2.7 x 10−2 C 3.4 x 10−2 3.4 x 10−2 D 4.7 x 102 4.7 x 102 16 A stone of mass m is attached to a string. The stone is made to rotate in a vertical circle of radius r, as shown. At the point where the stone is vertically above the centre of the circle, the stone has speed v. Which of the following expressions gives the tension in the string? A 2mvmg r B 2mv r C 2mv mgr  D 2mv mgr  r v Equator Cambridge 52°