EJC Physics 2023 J2 H1 MYE PAPER 1

©EJC 2023 8867/J2H1MYE2023 [Turn over EUNOIA JUNIOR COLLEGE JC2 MID YEAR EXAMINATIONS 2023 General Certificate of Education Advanced Level Higher 1 CANDIDATE NAME CIVICS GROUP 2 2 - REGISTRATION NUMBER PHYSICS Multiple Choice Questions 8867/01 5th July 2023 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your name, civics group and registration number on all the work you hand in. The use of an approved scientific calculator is expected where appropriate. Answer all questions. There are thirty questions in this section. 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. 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 19 printed pages and 1 blank page.

2 ©EJC 2023 8867/J2H1MYE2023 Data Formulae uniformly accelerated motion =+ ++ =+ = + + = 2 22 12 12 1 2 2 1 1 1 s at u as R / R / R u v /R t RR resistors in series resistors in parallel speed of light in free space − − − − − − −− −   =   = = = =  = = = 81 19 27 31 e 27 p 23 1 A 11 2 2 2 3 00 1 60 9 11 1 10 m s 10 C 1 66 10 kg 10 kg 10 kg 6 02 10 mol 10 N m k 6 1 g m 7 s 7 66 98 c u . e. . . N G. g . m m . . elementary charge unified atomic mass constant rest mass of electron rest mass of proton the Avogadro constant gravitational constant acceleration of free fall

3 ©EJC 2023 8867/J2H1MYE2023 [Turn over 1 Which estimate is realistic? A The kinetic energy of a bus travelling on an expressway is 30 000 J B The power of a domestic light is 300 W. C The temperature of a hot oven is 300 K. D The volume of air in a car tyre is 0.03 m3. 2 Which quantity could have units of N m V−1? A acceleration B charge C current D resistance 3 Four students each made a series of measurements of the acceleration of free fall g. The table shows the results obtained. Which student obtained a set of results that could be described as precise but not accurate?

4 ©EJC 2023 8867/J2H1MYE2023 4 A steel ball is released from rest at a distance above a rigid horizontal surface and is allowed to bounce. Which graph best represents the variation with time t of acceleration a?

5 ©EJC 2023 8867/J2H1MYE2023 [Turn over 5 A train, initially at rest at a station, has a uniform acceleration of 0.20 m s −2 until it reaches a speed of 20 m s −1. It travels for some time at this constant speed and then has a uniform deceleration of 0.40 m s−2 until it comes to a rest at the next station. The distance between the two stations is 3000 m. What is the time taken by the train to travel between the two stations? A 75 s B 150 s C 225 s D 300 s 6 An object is thrown with velocity 5.2 m s−1 vertically upwards on the Moon. The acceleration due to gravity on the Moon is 1.62 m s−2. What is the time taken for the object to return to its starting point? A 2.5 s B 3.2 s C 4.5 s D 6.4 s

6 ©EJC 2023 8867/J2H1MYE2023 7 Which graph best shows the variation with time of the momentum of a body accelerated by a constant force? 8 A mass is supported by a person’s hand and two newton-meters as shown. When the person’s hand is removed, what is the initial vertical acceleration of the mass? A 0.6 m s−2 B 2.8 m s−2 C 4.3 m s−2 D 5.7 m s−2

7 ©EJC 2023 8867/J2H1MYE2023 [Turn over 9 Two train carriages each of mass 5000 kg roll toward one another on a level track. One is travelling at 2.00 m s−1 and the other at 1.00 m s−1, as shown. They collide and join together. What is the kinetic energy lost during the collision? A 1250 J B 7500 J C 11 250 J D 12 500 J 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 3 2 x B 4 3 x C 2x D 3x

8 ©EJC 2023 8867/J2H1MYE2023 11 A hinged door is held closed in the horizontal position by a cable. Three forces act on the door: the weight W of the door, the tension T in the cable, and the force H at the hinge. Which list gives the three forces in increasing order of magnitude? A H, T, W B T, H, W C W, H, T D W, T, H

9 ©EJC 2023 8867/J2H1MYE2023 [Turn over 12 A uniform metre rule of mass 100 g is supported by a knife-edge at the 40 cm mark and a string at the 100 cm mark. The string passes round a frictionless pulley and carries a mass of 20 g as shown in the diagram. At which mark on the rule must a 50 g mass be suspended so that the rule balances? A 4 cm B 36 cm C 44 cm D 96 cm

10 ©EJC 2023 8867/J2H1MYE2023 13 A trolley of mass 600 kg is initially at point P on a slope, at a height of 80 m above ground level, as shown. The trolley is released from rest and moves along the slope, first coming to rest at point Q, at height h above ground level. The total distance PQ moved by the trolley along the slope is 1.5 km. A constant resistive force of 300 N opposes the motion of the trolley on the slope. What is h? A 3.5 m B 76 m C 79 m D 80 m 14 A car travels along a road at a constant speed of 20 m s−1. Its power output is 23 kW. The total frictional force on the car is proportional to the square of its speed. What power will be required to travel at a constant speed of 40 m s−1? A 46 kW B 92 kW C 184 kW D 368 kW