Dynamics
Definitions: Dynamics
Exam question
State Newton’s first law of motion.
9702/23 · May/Jun 2020 · Q2(a)
Model answer
An object remains at rest or moves with constant velocity unless acted on by a non-zero resultant force.
Exam question
State Newton’s second law of motion.
9702/21 · May/Jun 2020 · Q2(a)
Model answer
The resultant force is proportional to the rate of change of momentum and acts in that direction.
Exam question
Define force.
9702/21 · Oct/Nov 2020 · Q3(a)
Model answer
Force is the rate of change of momentum.
Exam question
Define linear momentum.
9702/21 · Oct/Nov 2024 · Q2(a)
Model answer
The product of an object's mass and velocity.
Exam question
State the principle of conservation of momentum.
9702/23 · May/Jun 2025 · Q4(a)
Model answer
The total momentum of a system remains constant provided that no resultant external force acts on the system.