Physics Quiz: Part 1

Base vs. Derived Quantities: Physics is built upon seven base quantities like length (m), mass (kg), and time (s). All other quantities, called derived quantities, are combinations of these. For example, velocity (m/s) and force ($kg\cdot m/s^2$) are derived.

Scalars vs. Vectors: A scalar has only magnitude (e.g., distance 10 m, speed 20 m/s). A vector has both magnitude and direction (e.g., displacement 10 m East, velocity 20 m/s North).

Vector Operations: Vectors add 'head-to-tail'. For perpendicular vectors, use the Pythagorean theorem: $a^2 + b^2 = c^2$. Any vector can be resolved into perpendicular components using trigonometry: $V_x = V \cos(\theta)$ and $V_y = V \sin(\theta)$.