Impulse = Δ Momentum
This safety device explodes and increases the time of collision, protecting careless teens from stationary trees since 1959.
What are airbags?
In the vacuum of space, this happens to an astronaut if she throws a ball forward. It's not magic—just this physical law keeping everything in balance.
What is the astronaut moves backwards?
Three resistors (2 Ω, 4 Ω, 6 Ω) are connected in a series like a resistance conga line. This is their total resistance.
What is 12 ohms?
Three resistors (6 Ω, 3 Ω, and 2 Ω) are connected in parallel. Calculate the total resistance. Your calculator’s waiting.
What is 1 ohm?
This sacred slip of paper is your ticket to freedom for approximately 5 minutes—unless you’re caught wandering.
What is a bathroom pass?
An object has a mass of 3 kg and is moving at 5 m/s for 10 seconds. What is its momentum?
What is 15 kg*m/s?
When two identical bumper carts collide head-on—one moving, one not—they swap speeds, conserving kinetic energy as well as momentum It's only possible when this kind of collision occurs.
What is an elastic collision?
In a series circuit with a 12 V battery and three resistors totaling 6 Ω, this is the total current flowing through the loop.
What is 2 amps?
You plug in a 120 V battery to a parallel circuit with a 10 Ω and 20 Ω resistor. This is the current through the 10 Ω resistor.
What is 12 Amps?
This status symbol for teens doubles as a way to ignore teachers, pretend you're listening to music, and mysteriously never needs to be charged during class.
What are AirPods?
A soccer ball that weighs 2 kg experiences a force of 12 N for 0.5 seconds. What is the impulse delivered to the ball?
What is 6 Newtons?
Two identical carts (1 kg each) on a frictionless track have a classic encounter. Cart A zips along at 4 m/s, Cart B chills at 0 m/s. After a perfectly elastic collision, Cart B takes off at this speed.
What is 4 m/s?
You connect a 10 Ω resistor to a 5 A current in series. Your phone buzzes and asks you: “How much power are you using?”
What is 250 watts?
You connect a microwave that uses 1200 W of power to a 120 V parallel outlet. This is how much current it pulls from the wall.
What is 10 Amps?
This machine sings when belts, phones, airpods, and chargers travel through them.
What are metal detectors?
A 50 kg bicycle is traveling at 10 m/s. What impulse is required for the bike to come to a stop?
What is -500 N*s?
A 2 kg cart at 3 m/s collides elastically with a 1 kg cart at rest. After impact, the big cart slows down to 1 m/s. This is the final velocity of the smaller cart.
What is 4 m/s?
In a series circuit, you’ve got a 24 V battery and two resistors (2 Ω and 4 Ω). You feel a surge of curiosity and ask: What’s the voltage drop across the 4 Ω resistor?
What is 16 Volts?
A toaster has a resistance of 24 Ω and is plugged into a 120 V outlet. Before you crisp that bagel, you want to know how much power it’s using.
What is 600 watts?
This is the reward for students caught skipping and abusing hall pass privileges.
What is lunch reset?
A 0.2 kg baseball traveling at 40 m/s is caught by an outfielder. If the contact time with the glove is 0.01 s, what average force did the glove apply?
What is -800 N?
One cart (4 kg) is moving at 2 m/s, and another cart (2 kg) is heading straight at it at -3 m/s. They collide and stick together. This is their shared velocity after the crash.
What is 0.33 m/s?
If a bulb in a series circuit goes out, the whole string of lights turns off faster than your WiFi at midnight. This is why.
What is there's only one path for current to flow?
In this type of circuit, electrons party like it's Saturday night—they split up, take different paths, and still manage to reunite at the power source. That’s the reason why one bulb burning out doesn’t kill the whole vibe.
What is a parallel circuit?
This game includes serving, yelling "deuce", and green fuzzy balls.
What is tennis?