ConceptConceptDocsDocuments

CAIE A-Level Physics 3.2.2 Motion in a Gravitational Field with Drag

Practise explaining falling and rising motion with air resistance, relating weight, drag, resultant force, acceleration and the approach to constant speed.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Describe how an object moves in a uniform gravitational field when air resistance acts.
  • Explain how weight and increasing drag change the resultant force, acceleration and speed during the motion.
  • Interpret the qualitative motion graph or stages, including the approach to a constant speed.

3.2.2—The motion of objects in a uniform gravitational field with air resistance question 1

[Maximum number: 1]

The ball in (b) leaves the toy at point A and moves vertically upwards through the air. Point B is the position of the ball when it is at maximum height h above point A , as illustrated in Fig. 3.2.

Fig. 3.2 (not to scale)

Fig. 3.2 (not to scale)

The gravitational potential energy of the ball increases by 0.60 J as it moves from A to B .

When there is air resistance, the ball takes time T to move from A to B .

State and explain whether the time taken for the ball to move from A to its maximum height will be more than, less than or equal to time T if there is no air resistance.

All question bank results loaded