Physics 1: five habits that make it click
, 1 min read
Students often come to Physics 1 tutoring asking for help with equations. Usually the equations aren't the problem. The problem is starting to write equations before understanding the situation. These five habits fix that.
1. Draw it first
Every problem starts with a picture: a motion diagram for kinematics, a free-body diagram for forces. A free-body diagram with every force labeled turns Newton's second law from a guess into bookkeeping.
2. Write down what you know and what you want
List the givens with units, and name the unknown. Half of the difficulty in a word problem is translating it into symbols. Once that's done, the problem is usually shorter than it looked.
3. Choose the principle before the equation
Is this a forces problem, an energy problem or a momentum problem? A block sliding down a ramp can be solved with Newton's laws or conservation of energy, and choosing well can turn ten lines into three. Picking the idea first is what separates students who understand physics from students hunting for a formula.
4. Watch signs and units
Pick a positive direction and stick to it. A classic trap: a ball thrown straight up has zero velocity at the top, but its acceleration is still 9.8 m/s² downward the entire time. Units catch the rest. If an answer for a speed comes out in meters, something went wrong.
5. Ask whether the answer makes sense
A car that takes 400 seconds to brake, or a thrown baseball going faster than sound, is a sign to check the work. Estimating before calculating builds this instinct fast.
How Gabe uses this in sessions
In Physics 1 sessions, students solve problems out loud while Gabe watches for which habit breaks down. The session report names it, for example "skipped the free-body diagram on incline problems," so the next session starts exactly there.