NYJC 2025 JC1 Promo Past Year Package 2

9478 H2 PHYSICS JC 1 PROMO EXAM PAST YEAR PAPERS 2 MEASUREMENTS KINEMATICS DYNAMICS FORCES WORK, ENERGY POWER CIRCULAR MOTION GRAVITATIONAL FIELD OSCILLATIONS TEMPERATURE & IDEAL GASES FIRST LAW OF THERMODYNAMICS WAVE MOTION NANYANG JUNIOR COLLEGE JC1 PHYSICS TEAM SCIENCE DEPARTMENT 2025

Data Formulae uniformly accelerated motion s = ut + ½at2 v2 = u2 + 2as work done on/by a gas W = p∆V hydrostatic pressure p = ρgh gravitational potential  = /Gm r temperature T/K = T/oC + 273.15 pressure of an ideal gas p = 21 3 Nm cV mean translational kin etic energy of an ideal molecule E = 3 2 kT displaceme nt of particle in s.h.m. x = xo sin ωt velocity of particle in s.h.m. v = vo cos ωt =  22 x xo   electric curr ent I = Anvq resistors in series R = R1 + R2 + … resistors in parallel 1/ R = 1/R 1 + 1/R2 + … electric potential V = Q / 4πεor alternating current/voltage x = xo sin ωt magnetic flux density due to a long straight wire B = µoI / 2πd magnetic flux density due to a flat circular coil B = µoNI / 2r magnetic flux density due to a long solenoid B = µonI radioactive decay x = xo exp (-λt) decay constant λ = ln2 / t1/2 speed of light in free space c = 3.00  108 m s-1 permeability of free space μo = 4π  10-7 H m-1 permittivity of free space εo = 8.85  10-12 F m-1 (1 / (36π))  10-9 F m-1 elementary charge e = 1.60  10-19 C the Planck constant h = 6.63  10-34 J s 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 molar gas constant R = 8.31 J K -1 mol-1 the Avogadro constant NA = 6.02  1023 mol-1 the Boltzmann constant k = 1.38  10-23 J K-1 gravitational constant, G = 6.67  10-11 N m2 kg-2 acceleration of free fall g = 9.81 m s -2

1 NYJC 2017 9749/01/J1EOYEXAM/17 NANYANG JUNIOR COLLEGE JC 1 END-OF-YEAR EXAMNATION Higher 2 PHYSICS 9749/01 Paper 1 Multiple Choice 28 September 2017 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and tutor’s name 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. This document consists of 14 printed pages.

3 NYJC 2017 9749/01/J1EOYEXAM/17 [Turn over 1 The resistance R of a conductor is defined as the ratio of potential difference across it to current through it. Which of the following is an acceptable unit of R? A V A B kg A2 m2 s C kg m2 s3 D kg C2 m2 s1 2 On a map, the distance of towns P and Q from town T are measured to a precision of 0.5 cm as 38.5 cm and 43.5 cm respectively. If the scale of the map is 1:20 000, which of the following best expresses how much further town Q is from town T on the ground compared to town P? A 1.00 km  20% B 1.0 km  20% C 0.100 km  4% D 0.1 km  4% 3 PQRS is a parallelogram made up of four vectors PQ, QR, RS and SP. At time t = 0, the velocities of cars X and Y are represented by the vectors PQ and SP respectively. At t = 10 s, both cars are moving with the same velocity. Between t = 0 and t = 10 s, car X undergoes a change in velocity represented by the vector QR. What is the change in velocity of car Y during the same time period and its final velocity? change in velocity final velocity A RS QS B RS QS C RS PR D RS PR Q P R S

4 NYJC 2017 9749/01/J1EOYEXAM/17 4 The figure below shows the velocity -time graph of two cars moving along the same road. If both cars were at the same point at t = 0 s, at what time will they meet again? A 7.5 s B 15 s C 20 s D 25 s 5 A projectile is projected at an angle  above the ground. When it reaches its maximum height of 10 m, it has a speed of 20 m s–1. The value of  is A 26o B 35o C 45o D 67o 6 In the absence of air resistance, a stone thrown from P follows a parabolic path, reaching the highest point at Q, and finally landing at R. Which of the following statements is true? A B C D The velocity of the stone at Q is zero because it has reached maximum height. The time taken to reach Q from P is greater than the time taken to reach R from Q. The acceleration of the stone between P and Q is positive and the acceleration between Q and R is negative. The speed of the stone is the same at P and R. v / m s-1 t / s 40 5 10 15 20 25 Car P Car Q 0 30 P Q R

5 NYJC 2017 9749/01/J1EOYEXAM/17 7 Which graph best shows the variation with time of the momentum of a body accelerated by a constant force? A B C D 8 Box P and Q of masses 1.0 kg and 4.0 kg respectively are being pushed along a rough, horizontal surface by a constant force of 80 N. The two boxes slide across the rough surface with a constant velocity of 2.0 m s−1 to the right. The frictional force acting on box P is 25 N. The force exerted by box Q on box P is A 52 N B 55 N C 64 N D 80 N 9 A block of mass 1.2 kg slides down a smooth slope from rest as shown below. What is the momentum of the block along the slope after 4.0 s? A 13 kg m s−1 B 16 kg m s−1 C 37 kg m s−1 D 44 kg m s−1 momentum 0 0 time momentum 0 0 time momentum 0 0 time momentum 0 0 time 20º P Q 80 N

6 NYJC 2017 9749/01/J1EOYEXAM/17 10 Three coplanar forces, 10 N, 8 N and 6 N act on a flat object. Which one of the following shows the flat object in equilibrium under the action of the forces? 11 A submarine descends vertically at a constant velocity. The three forces acting on the submarine are viscous drag, upthrust and weight. Which relationship between the magnitudes of the forces is correct? A weight < drag B weight = drag C weight < upthrust D weight > upthrust 12 A uniform horizontal beam of length 10 m and weight 200 N is attached to a wall as shown below. The far end of the beam is supported by a cable which makes an angle of 60° with respect to the beam. A 500 N boy stands 2.0 m from the wall. The tension in the cable is 230 N. The force exerted by the wall on the beam is A 150 N B 470 N C 510 N D 620 N 10 m 8 N 10 N A 8 N 10 N B 6 N 8 N 10 N C 6 N 10 N 8 N D 6 N 6 N

7 NYJC 2017 9749/01/J1EOYEXAM/17 13 A plane inclined at 30° to the horizontal consists of a 2.0 0 m smooth portion at the top and a 2.00 m rough portion at the bottom. A 0.600 kg object is released from rest at the top of the plane. Assuming that it experiences a constant frictional force of 7.50 N from the rough portion, what is the total distance travelled by the object before it comes to a stop? A 2.44 m B 2.65 m C 2.78 m D 3.29 m 14 A car is moving horizontally at a constant velocity of 12 m s−1. The driving force provided by the engine of the car is 500 N. Which of the following statements is correct? A The net force on the car is 500 N. B The power provided by the engine is 42 W. C The work done by the engine to maintain constant velocity is 42 J. D The rate of energy lost by the car is 6.0 kW. 15 An electric motor is required to raise a 200 kg mass at constant speed through a vertical height of 800 m in 4.0 minutes. The efficiency of the motor is 75%. What is the electrical power supplied to the motor? A 4.9 kW B 8.7 kW C 26 kW D 520 kW 30o smooth (2.00 m) rough (2.00 m) 0.600 kg object 800 m 200 kg

8 NYJC 2017 9749/01/J1EOYEXAM/17 16 Two i