1. What does Newton's First Law of Motion describe?
2. What is the formula for density as described in the course content?
3. What is the primary role of work and power in physics?
Newton's First Law — definition?
An object remains at rest or in uniform motion unless acted upon.
Mass vs Density — difference?
Mass measures matter; density measures matter per volume.
Work — formula?
Work = Force × Distance × cos(θ).
Inertia — property?
Resists changes in motion.
Force — definition?
Interaction causing change in motion.
Newton's First Law — statement?
Object at rest or in uniform motion.
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