<p> PHYSICS MIDTERM REVIEW</p><p>Unit 1: Linear Motion</p><p>Topic A: Uniform Motion</p><p>Key Terms: Frame of Reference, Constant Speed, Average Speed, Velocity, Distance, Displacement, Position</p><p>Note: If asked to find average or constant speed or velocity use the following equation.</p><p>Graphs: Distance/Displacement/Position Vs Time</p><p>Topic B: Accelerated Motion (speeding up, slowing down, changing direction)</p><p>Key Terms: Acceleration, Acceleration Due to Gravity (-9.8 m/s2)</p><p>Note: Anytime the motion is experiencing acceleration use one of the following equations.</p><p>Graphs: Distance/Displacement/Position Vs Time, Velocity Vs Time Unit 2: Vectors and 2D Motion</p><p>Topic A: Vectors</p><p>Key Terms: Head to Tail, Resultant, Component</p><p>Topic B: Projectiles</p><p>Key Terms: Range, Displacement</p><p>Note: When solving problems involving the motion of a projectile, remember to separate into horizontal “x” motion and vertical “y” motion since they are independent of each other. Then use the kinematics equations.</p><p>Projectiles Launched Horizontally</p><p>Notes on “x” Motion:</p><p>Vx = V (constant)</p><p> a = 0</p><p>Notes on “y” Motion:</p><p>Vyi = 0</p><p> a = -9.8</p><p>∆Y = is negative “-“</p><p>Projectiles Launched at an Angle (from the ground and landing on the ground)</p><p>Notes on “x” Motion:</p><p>Vx = Vcosθ (constant) a = 0</p><p>Notes on “y” Motion:</p><p> a = -9.8</p><p>∆Y = 0</p><p>Vyi = Vsinθ</p><p>Unit 3: Newton’s Laws of Motion</p><p>Key Terms: Force (Applied, Frictional, Gravity <weight>, Normal, Tension), Free Body Diagram</p><p>1st Law: Inertia</p><p> Balanced Forces</p><p> Constant Motion</p><p> State of Equilibrium</p><p>2nd Law: ΣF = ma</p><p> Unbalanced Force (Net Force)</p><p> Accelerated Motion</p><p> Acceleration is in the Direction of the Net Force</p><p> Acceleration and Net Force have a Direct Relationship</p><p> Acceleration and Mass have an Inverse Relationship</p><p>3rd Law: Action – Reaction</p><p> Forces are Equal and Opposite</p><p> Act on Different Objects</p><p>Solving Problems 1. Read the Problem</p><p>2. Draw a FBD with ALL Forces</p><p>3. ΣForces in “x” and “y” set = ma</p><p>4. Solve for Unknown Unit 4: Circular Motion and Universal Gravitation</p><p>Topic A: Circular Motion</p><p>Key Terms: Centripetal Acceleration, Centripetal Force, Linear (Tangential) Velocity, Frequency, Period</p><p>Note: A centripetal force is not a real force. It is some other force acting as a centripetal force. Examples: friction (car turning), gravity (orbiting bodies), tension (conical pendulum), normal (carnival rides), weight (something on the Earth’s surface)</p><p>Topic B: Universal Gravitation</p><p>Key Terms: Gravitational Force, Kepler’s Laws</p><p>Force of Gravity Depends on:</p><p>1. Mass of Objects (Direct Relationship)</p><p>2. Distance Between Centers (Inverse Square Relationship)</p>