1. A stone is thrown from a cliff and it lands in the sea as shown below. Air resistance is negligible. cliff sea Which of the following statements is correct whilst the stone is in motion? A. The vertical component of the stone's displacement is constant. B. The horizontal component of the stone's displacement is constant. C. The vertical component of the stone's velocity is constant. D. The horizontal component of the stone's velocity is constant. (Total 1 mark) 1 -- IB Questionbank Physics
2. This question is about projectile motion. A sphere is projected horizontally. The sphere is photographed at intervals of 0.10 s. The images of the sphere are shown against a grid on the diagram. Air resistance is negligible. vertical distance / m 0 0.5 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 horizontal distance / m 1.0 1.5 2.0 2.5 2 --- - -- IB Questionbank Physics
(a) Use data from the diagram to determine the acceleration of free fall. (3) (b) Determine the speed of the sphere 1.2 s after release. (5) (c) On the grid, draw the path of the sphere assuming air resistance is not negligible. (2) (Total 10 marks) 3 --- - -- IB Questionbank Physics