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Exercise 1
GCE O-Level 2018.
GCE O-Level 2019.
GCE O-Level 2020.
GCE O-Level 2021.
GCE O-level 2023
GCE O-level 2024
Select Lessons (41)
Dynamics: Newton’s Laws of Motion
ELECTRICITY : ELECTROMAGNETISM - Alternating Current
ELECTRICITY : ELECTROMAGNETISM - Current in a Magnetic Field
ELECTRICITY : ELECTROMAGNETISM - Electromagnetic Induction
ELECTRICITY : ELECTROMAGNETISM - Magnets
ELECTRICITY : Electric Current I
ELECTRICITY : Electrostatics
ELECTRICITY : MODERN PHYSICS - The Electron (Electronics)
ELECTRICITY : WAVES - Light
ELECTRICITY : WAVES - Vibrations and Sound
ELECTRICITY: Current
Energy: Application And Uses
Forces
HEAT : TEMPERATURE - Concept of Heat and Temperature
HEAT : TEMPERATURE - Heat Capacity
HEAT : TEMPERATURE - Heat Transfer
HEAT : TEMPERATURE - Thermometers
HEAT : TEMPERATURE - Thermometric Properties
Health Education
Linear Momentum
MECHANICS : ENERGY - Forms of Energy
MECHANICS : ENERGY - Machines
MECHANICS : ENERGY - Power
MECHANICS : ENERGY - Work
MECHANICS : FORCES - Moments
MECHANICS : FORCES - Newton’s laws of Motion
MECHANICS : FORCES - Physical quantities
MECHANICS : FORCES - Types and characteristics of forces
MECHANICS : FORCES - Vectors and Scalars
MECHANICS : MOTION - Conservation of Linear Momentum
MECHANICS : MOTION - Linear Motion
MECHANICS : PROPERTIES OF MATTER - Density
MECHANICS : PROPERTIES OF MATTER - Hooke’s Law
MECHANICS : PROPERTIES OF MATTER - Pressure
MOTION
Matter: Its Properties & Transformation
PRESSURE
Radioactivity
WAVES: Electromagnetic
5/30 MCQs for:
MECHANICS : MOTION - Conservation of Linear Momentum
In a rocket launch, the principle of conservation of momentum is demonstrated by:
The total mass of the rocket decreasing.
The acceleration of the rocket due to thrust.
The increase in speed as fuel burns.
The expulsion of gases from the rocket engine.
Which statement is true about momentum in a closed system?
It remains constant only in elastic collisions.
It is not conserved in inelastic collisions.
It is conserved when external forces are present.
It is always conserved in all types of collisions.
A car of mass 1000 kg is moving at a velocity of 20 m/s. What is the car’s momentum?
200 kg·m/s.
1000 kg·m/s.
5000 kg·m/s.
2000 kg·m/s.
What is the momentum of a stationary object?
It is equal to the object’s weight.
It depends on the mass.
It is equal to the object’s velocity.
Zero.
If a 2 kg object moving at 10 m/s collides with a stationary 3 kg object, and they stick together after the collision, what is their combined velocity?
4 m/s.
2 m/s.
10 m/s.
6 m/s.
