Work/Power
This is the formula for work when force and displacement are in the same direction.
W=Fd
This law relates voltage, current, and resistance.
Ohm’s Law
The force that keeps an object moving in a circle.
centripetal force
This quantity is always conserved in all collisions.
What is momentum
This is the rotational equivalent of force.
torque
Work is measured in this unit.
Joule (J)
The unit of electric current.
What is an Ampere (A)
This direction does centripetal force always point.
What is toward the center
A collision where objects stick together.
perfectly inelastic collision
The unit of torque.
What is Newton-meter (N·m)
If a 10 N force moves an object 5 m, this is the work done.
50 J
A 12 V battery and 3 Ω resistor produce this current
4 A
The formula for centripetal acceleration.
ac= v2/r
Momentum formula.
What is p=mv
Torque depends on force, distance, and this angle factor.
What is sin(θ)
This happens to work when force is applied perpendicular to motion (angle = 90°).
zero work
In a series circuit, this quantity stays the same everywhere.
current
If radius increases, centripetal force does this (assuming constant speed).
What is decreases
A 2 kg object moving at 3 m/s hits a 1 kg object at rest and sticks together. This is the final velocity.
What is 2 m/s
A 10 N force applied 0.5 m from a pivot at 90° produces this torque.
What is 5 N·m
A 1000 W machine runs for 30 seconds. This is power created
33.33 W
Two 6 Ω resistors in parallel have this total resistance.
What is 3 Ω
A 2 kg object moves at 4 m/s in a 2 m radius circle. This is the centripetal force.
What is 16 N
In this type of collision, both momentum and kinetic energy are conserved.
elastic collision
If two equal forces act on opposite sides of a fulcrum at equal distances, this is the net torque.
What is zero (equilibrium)