#AP Physics 1: Linear Momentum Study Guide 🚀

Hey there, future physics pro! Let's break down linear momentum for your AP exam. This guide is designed to be your go-to resource the night before the test. Let's make sure you're feeling confident and ready to ace it! 💪

#What is Linear Momentum?

#Definition of Linear Momentum

• Formula: $\vec{p} = m\vec{v}$ where:

  • $\vec{p}$ is the linear momentum (kg⋅m/s)
  • $m$ is the mass (kg)
  • $\vec{v}$ is the velocity (m/s)

• Key Insights:

  • Momentum depends on both mass and velocity. Double either, and you double the momentum.
  • SI units: kilogram-meters per second (kg⋅m/s)

#Vector Nature of Momentum

• Direction Matters: Momentum is a vector with both magnitude (size) and direction. It points in the same direction as the object's velocity.
• Positive vs. Negative:
  • Positive momentum: motion to the right or upwards
  • Negative momentum: motion to the left or downwards
• Vector Addition: You can add or subtract momentum components just like any other vectors to find the net momentum of a system.
• Changing Momentum: Change in velocity (speed or direction) means a change in momentum.

#Momentum in Collisions and Explosions 💥

Conservation of momentum is HUGE for collisions an...