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MDCAT Prep · Physics · Quick Reference
Lesson 14 — Physics MCQ Challenge Cheat Sheet
In one line: The twelve facts this challenge keeps testing — Newton's laws, kinematics, momentum, waves, and circuits.
Fast Recall
1Newton 1 = no net force, no change in motion (inertia).
2Newton 2: F = ma.
3v = u + at links final velocity, initial velocity, acceleration, time.
4Momentum p = mv.
5Elastic collisions conserve both momentum AND kinetic energy.
6Wave equation: v = fλ.
More Fast Recall
7Sound = longitudinal wave; needs a medium.
8Snell's law uses the refractive indices of the two media.
9Ohm's law: V = IR.
10Series resistance = sum of resistors.
11Parallel resistance: 1/R = 1/R1 + 1/R2.
12Kirchhoff's 2nd law: sum of voltage changes around a loop = 0.