Physics 0625 · IGCSE · Kinetic particle model of matter
Kinetic particle model of matter — practice question
Fig. 5.1 illustrates the setup used to watch the motion of smoke particles suspended in air inside a box. Lamp light enters the box through a window in one side, and a microscope mounted above a window in the top is used to view the smoke particles.
(a(i))[1]
The microscope is used to observe the motion of one smoke particle. In the circle shown, sketch the route of this smoke particle.
(a(ii))[3]
Explain why the smoke particle takes the path that is seen.
(b)[3]
Calculate the mean force that the ball exerts on the wall.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Sketch consisting of straight-line sections with abrupt changes of direction” …