YIJC 2024 JC2 PRELIM H1 Phy P1 QP

©YIJC 8867/01/YIJC/24 [Turn over YISHUN INNOVA JUNIOR COLLEGE JC 2 PRELIMINARY EXAMINATION Higher 1 CANDIDATE NAME CG INDEX NO PHYSICS Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 8867/01 13 Sept 2024 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid/tape. Write your name, class and index number on the Answer Sheet in the spaces provided unless this has been done for you. 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 Answer Sheet. Read the instructions on the 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 booklet. The use of an approved scientific calculator is expected, where appropriate. This document consists of 15 printed pages and 1 blank page.

2 ©YIJC 8867/01/YIJC/24 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 + 2 1at2 v2 = u2 + 2as resistors in series R = R1 + R2 +………. resistors in parallel R 1 ........11 21  RR =

3 ©YIJC 8867/01/YIJC/24 [Turn over Answer all questions. 1 A student estimates the maximum speed of four different moving objects. Which maximum speed is not a reasonable estimate? A container ship: 10 m s–1 B Olympic sprinter: 0.1 km s−1 C racing car: 9000 cm s–1 D snail: 0.01 km h–1 2 Rain is falling vertically down at a constant speed of 8.0 m s−1. A passenger on a bus travelling at a constant velocity of 60 km h−1 on a horizontal surface sees the side windowpane and the tracks caused by the rain. At what angle does the rain track appear to be making from the vertical? A 8o B 26o C 64o D 82o 3 A set of repeated measurements is made of a fixed quantity. An average of these measurements is calculated. What is the effect of averaging on the random error and the systematic error in the measurements? A Random error and systematic error are both reduced. B Random error and systematic error are both unaffected. C Random error is reduced but systematic error is unaffected. D Random error is unaffected but systematic error is reduced.

4 ©YIJC 8867/01/YIJC/24 4 A parachutist falls from a stationary hot air balloon at time t = 0. The velocity –time graph for the parachutist from time t = 0 until the time when he is just above the ground is shown. Which graph best shows the variation with time of the acceleration of the parachutist? A B C D

5 ©YIJC 8867/01/YIJC/24 [Turn over 5 A projectile is fired from point P with velocity V at an angle  to the horizontal. It lands at point Q, a horizontal distance R from P. The acceleration of free fall is g. Air resistance is negligible. Which of the following graphs correctly shows the variation with angle θ of the range R. A B C D R θ 0 90° R θ 0 90° R θ 0 90° R θ 0 90°

6 ©YIJC 8867/01/YIJC/24 6 A cyclist takes off horizontally from a point 2.0 m above the surface of a pool of water, which is 2.5 m wide. What is the cyclist’s minimum take-off speed in order to clear the pool of water? A 2.8 m s−1 B 3.9 m s−1 C 5.5 m s−1 D 6.1 m s−1 7 A 1.2 kg box is accelerated over 3.0 s as shown below. What is the impulse of the ball? A 3.6 N s B 7.5 N s C 9.0 N s D 12 N s 8 A 5.0 kg mass is connected to a 3.0 kg mass by an inextensible string. They are hung over a frictionless pulley as shown. As the masses move, the 5.0 kg mass experiences 20 N of friction. What is the magnitude of acceleration of the 3.0 kg mass? A 0.5 m s−2 B 1.2 m s−2 C 1.9 m s−2 D 3.1 m s−2 2.0 m 2.5 m pool of water 3.0 acceleration / m s−2 t / s 2.0 3.0 0 5.0 kg 3.0 kg 20 N

7 ©YIJC 8867/01/YIJC/24 [Turn over 9 Which of the following statements correctly identify an action-reaction pair? A The tension acting on two boys pulling on two ends of the same rope. B The attractive force that an airplane exerts on the Earth and the weight of the airplane. C The centripetal force on a car making a turn and the friction acting on the car. D The thrust of a boat’s propeller on the water and the buoyancy force of the water on the boat. 10 A ball of weight W is held stationary on a slope with a force R. Which arrow represents the resultant force the slope exerts on the ball? 11 A 1.0 kg uniform rod of 2.0 m is pivoted from a wall at P. A mass of 5.0 kg is hung a distance x from P and the rod is supported by a string 1.8 m from P. If the string is rated for a maximum tension of 20 N, what is the maximum value of x such that the string does not break? A 0.056 m B 0.36 m C 0.61 m D 0.66 m R W A B C D string 5.0 kg mass x 70° P 40°

8 ©YIJC 8867/01/YIJC/24 12 A non-uniform rod PQ of length 1 .0 m is placed on two electronic balances. The two balances give readings of 200 g and 500 g. How far is the centre of gravity of the rod from the side P? A 0.29 m B 0.50 m C 0.71 m D 0.87 m 13 The graph below shows the variation of the force with compression for a spring. Which of the following is closest to the compression required to store 0.90 J of potential energy in the spring? A 0.05 m B 0.06 m C 0.07 m D 0.08 m 14 A crate of mass 50 kg is pushed a distance of 6.0 m along a horizontal surface against a constant resistive force of 70 N. The crate moves at a constant speed. It is then lifted slowly, at a constant speed, through a vertical distance of 1.2 m onto the back of a lorry. What is the total work done in this process? A 420 J B 480 J C 590 J D 1000 J 15 A man lifts a weight of 480 N with a constant speed through a distance of 3.5 m using a rope and some pulleys. The man pulls on the rope with a force of 200 N and a length of 10.5 m passes through his hands. What is the efficiency in percentage of the pulley system? A 20% B 40% C 60% D 80% 200 g 500 g 1.0 m P Q force / N compression / m (N)

9 ©YIJC 8867/01/YIJC/24 [Turn over 16 A body is moving in a uniform circular motion in a horizontal plane. Which of the following statements is correct? A Both the angular velocity and the linear velocity are constant. B Both the angular velocity and the kinetic energy are constant. C Both the angular velocity and the linear momentum are constant. D Both the linear velocity and the linear acceleration are constant. 17 Two block mass