Introduction to Physics

1. The word “Physics” comes from the Greek word “Physis.” What does “Physis” mean?

• Energy

• Matter

• Nature

• Science

Physics is primarily the science of:

• Algorithms and data encryption

• Matter, energy, and their interactions

• Biological evolution and heredity

• Language structure and semantic

Who first used the term “Physics” in his writings on natural phenomena?

•  Archimedes

• Galileo

• Aristotle

•  Democritus

A particle travels 240 meters in 12 seconds. Calculate its average speed.

• 15 m/s

• 20 m/s

• 30 m/s

• 25 m/s

Which of these is NOT a branch of physics?

• Thermodynamics

• Astrophysics

• Genetics

• Acoustics

Light travels at 3.0 × 10⁸ m/s. How long will it take light to travel from the Moon  Earth (distance 3.84 × 10⁸ metres)?

• 0.9 seconds

• 1.28 seconds

• 2.5 seconds

• 10 seconds

An object of mass 5 kg experiences a net force of 25 N. Its acceleration is:

• 5 m/s²

• 2.5 m/s²

• 10 m/s²

•   0.2 m/s²

A 100 W bulb runs for 4 hours. How much energy does it use in kWh?

•    0.4 kWh

•    2.5 kWh

• 0.2 kWh

•    1.0 kWh

The straight-line path of light can be demonstrated using:

•  A calorimeter

• A ripple tank

• A pinhole camera

•  A voltmeter

Studying thermal expansion belongs to:

• Acoustics

•  Optics

•  Thermodynamics

•    Quantum Mechanics