2022 XMS P1 PRELIM QP

2 6091 / Physics / Paper 1 /2022 Prelim Exam 1 A pair of vernier calipers is used to measure the radius of a button battery. What is the radius of the button battery? A 0.62 cm B 0.65 cm C 0.72 cm D 0.75 cm 2 The graph below shows how the height of a swinging pendulum bob changes with time. What is the period of the oscillation? A 1.5 s B 3.0 s C 4.5 s D 6.0 s 3 Alex is jogging at constant speed beside a road. He sees the traffic lights in front of him turn amber, so he begins to jog at a lower constant speed. Which distance-time graph illustrates Alex’s motion? A B C D 4.5 s 0.50 time / s 0.20 height / m

3 6091 / Physics / Paper 1 /2022 Prelim Exam 4 The acceleration of free fall on a particular planet is 8.0 m s-2. An object was dropped from rest and hit the ground after 1.5 s. Air resistance is negligible. From what height was the object dropped? A 6.0 m B 9.0 m C 12 m D 18 m 5 A rubber ducky is released from the bottom of a pool of water. Almost immediately, it rises at a constant speed to reach the surface of the water. Which of the following best describes the resultant force acting on the rubber ducky? A zero B upwards and equal to the rubber ducky’s weight C upwards and greater than the rubber ducky’s weight D upwards and less than the rubber ducky’s weight 6 P, Q and R are three identical blocks resting on a smooth surface. The blocks are connected by inelastic strings and a force of 30 N is applied on the right side of block R. What are the tensions T1, between blocks P and Q, and T2, between blocks Q and R, in the strings? T1 T2 A 15 N 15 N B 30 N 30 N C 10 N 20 N D 7.5 N 15 N 7 When a balloon is released, it rises in the air. It will eventually stop rising once it reaches a certain height H from the ground. Why is this so? A The density of the air in the balloon is the same as the density of the atmosphere at H. B The gravitational force acting on the balloon is stronger at H than at sea level. C The normal contact force on the balloon becomes zero. D The size of the balloon decreases due to a decrease in its weight. P Q R 30 N T1 T2

4 6091 / Physics / Paper 1 /2022 Prelim Exam 8 Rachael pivots a 120 cm rod of negligible mass at the 40 cm mark. She then applies two weights and a spring at three positions of the rod. What is the resultant moment acting on the rod? A 8 Nm anti-clockwise B 14 Nm clockwise C 18 Nm anti-clockwise D 32 Nm clockwise 9 The diagrams below show four pointers attached freely to the centre of a circular board at different orientations. Which board has its pointer in stable equilibrium? 10 When a force of 5.0 N is exerted on an object, the object moves at a constant speed of 0.20 m s-1 for 50 m. What is the power