AP Physics 1 Formula Sheet Quiz

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Questions and Answers

What is the 1st kinematic equation?

  • a = ∑F/m = Fnet/m
  • x = x₀ + v₀t + ½at²
  • v² = v₀² + 2a(∆x)
  • v = v₀ + at (correct)

Which equation represents the 2nd kinematic equation?

  • |Ff| = µ|Fn|
  • v² = v₀² + 2a(∆x)
  • a = ∑F/m = Fnet/m
  • x = x₀ + v₀t + ½at² (correct)

Identify the 3rd kinematic equation:

  • x = x₀ + v₀t + ½at²
  • p = mv
  • v² = v₀² + 2a(∆x) (correct)
  • v = v₀ + at

What does Newton's 2nd Law expressed as a = ∑F/m indicate?

<p>Acceleration is proportional to the net force acting on an object divided by its mass.</p> Signup and view all the answers

What does the equation |Ff| = µ|Fn| represent?

<p>Force of friction (D)</p> Signup and view all the answers

Which formula corresponds to centripetal acceleration?

<p>a = v²/r (C)</p> Signup and view all the answers

Define linear momentum.

<p>p = mv (C)</p> Signup and view all the answers

What does the Impulse Momentum Theorem state?

<p>Impulse equals the change in momentum.</p> Signup and view all the answers

What is the formula for kinetic energy?

<p>K = ½mv² (C)</p> Signup and view all the answers

What does the Work Energy Theorem express?

<p>∆E = W = Fd = Fdcos(θ) (C)</p> Signup and view all the answers

What is the formula for power?

<p>P = ∆E/∆t</p> Signup and view all the answers

What does Hooke's Law express?

<p>|Fs| = k|x| (A)</p> Signup and view all the answers

How is potential energy of a spring defined?

<p>Us = ½kx² (D)</p> Signup and view all the answers

What does the equation ∆Ug = mg∆y represent?

<p>Gravitational potential energy near a planet surface (A)</p> Signup and view all the answers

What describes the gravitational force between two massive objects?

<p>|Fg| = Gm₁m₂/r² (D)</p> Signup and view all the answers

Which equation represents the 1st angular kinematic equation?

<p>θ = θ₀ + ω₀t + ½αt² (D)</p> Signup and view all the answers

Identify the equation for the 2nd angular kinematic equation:

<p>ω = ω₀ + αt (C)</p> Signup and view all the answers

What does Newton's second law for rotation express?

<p>α = ∑τ/I = τnet/I</p> Signup and view all the answers

What formula represents torque?

<p>τ = rF = rFsinθ (B)</p> Signup and view all the answers

Which equation defines angular momentum?

<p>L = Iω (A)</p> Signup and view all the answers

What is the equation for angular impulse momentum?

<p>∆L = τ∆t</p> Signup and view all the answers

Define rotational kinetic energy.

<p>K = ½Iω² (B)</p> Signup and view all the answers

What is the formula for the period in terms of angular frequency?

<p>T = (2π)/ω = 1/f (D)</p> Signup and view all the answers

What does the equation Ts = 2π√(m/k) represent?

<p>Period of a spring (D)</p> Signup and view all the answers

Identify the formula for the period of a pendulum.

<p>Tp = 2π√(l/g) (A)</p> Signup and view all the answers

What describes the position of an object in SHM as a function of time?

<p>x = Acos(2πft)</p> Signup and view all the answers

Define the gravitational potential energy between two masses.

<p>Ug = (-Gm₁m₂)/r (A)</p> Signup and view all the answers

What is the equation for density?

<p>ρ = m/V</p> Signup and view all the answers

How is gravitational field acceleration defined?

<p>g = Fg/m</p> Signup and view all the answers

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Study Notes

Kinematic Equations

  • The 1st kinematic equation expresses final velocity as a function of initial velocity, acceleration, and time: v = v₀ + at.
  • The 2nd kinematic equation describes displacement in terms of initial velocity, time, acceleration, and provides a means to calculate distance traveled: x = x₀ + v₀t + ½at².
  • The 3rd kinematic equation relates final velocity, initial velocity, acceleration, and displacement, useful for calculating velocity changes: v² = v₀² + 2a(∆x).

Newton’s Laws and Forces

  • Newton's 2nd Law, solving for acceleration, is represented by: a = ∑F/m = Fnet/m, illustrating the relationship between net force, mass, and acceleration.
  • The force of friction is defined by the equation: |Ff| = µ|Fn|, where the frictional force is proportional to the normal force and the coefficient of friction.

Circular Motion

  • Centripetal acceleration, necessary for objects moving in a circle, is given by: a = v²/r, linking the speed of the object, radius, and acceleration.

Momentum

  • Linear momentum is determined by the product of mass and velocity: p = mv.
  • The Impulse Momentum Theorem states that the change in momentum is equal to the force applied multiplied by the time duration: ∆p = F∆t.

Energy Definitions

  • Kinetic energy (translational) is calculated with the formula: K = ½mv², indicating the energy an object possesses due to its motion.
  • The Work Energy Theorem relates work done to energy change: ∆E = W = Fd = Fdcos(θ), linking force, distance, and angle of application.
  • Power is defined as the rate of energy change over time: P = ∆E/∆t.

Spring and Gravitational Energy

  • Hooke's Law describes the force exerted by a spring: |Fs| = k|x|, where k is the spring constant and x is the displacement from equilibrium.
  • The potential energy stored in a spring is given by: Us = ½kx².
  • Gravitational potential energy near the surface of a planet is calculated as: ∆Ug = mg∆y, where m is mass, g is gravitational acceleration, and ∆y is the change in height.

Gravitational Forces

  • The gravitational force between two masses is quantified by: |Fg| = Gm₁m₂/r², where G is the gravitational constant, m₁ and m₂ are masses, and r is the distance between centers.

Rotational Motion

  • The 1st angular kinematic equation relates angular position, initial angular position, angular velocity, and angular acceleration: θ = θ₀ + ω₀t + ½αt².
  • The 2nd angular kinematic equation relates final angular velocity to initial velocity and angular acceleration: ω = ω₀ + αt.
  • Newton's second law for rotation, solved for angular acceleration, is: α = ∑τ/I = τnet/I, where τ is torque and I is moment of inertia.
  • Torque is defined as: τ = rF = rFsinθ, illustrating its dependence on radius, force, and the angle between the force and radius vector.

Angular Momentum and Energy

  • Angular momentum is defined as the product of moment of inertia and angular velocity: L = Iω.
  • The Angular Impulse Momentum Theorem states the change in angular momentum equals torque multiplied by time: ∆L = τ∆t.
  • Rotational kinetic energy is calculated using: K = ½Iω².

Oscillations and Frequency

  • The period of a wave is expressed in terms of angular frequency: T = (2π)/ω = 1/f, connecting the concepts of frequency and time.
  • The period of a spring is given by: Ts = 2π√(m/k).
  • The period of a pendulum is defined as: Tp = 2π√(l/g), where l is the length of the pendulum and g is gravitational acceleration.

Simple Harmonic Motion

  • The position of an object in Simple Harmonic Motion (SHM) is described by: x = Acos(2πft), where A is the amplitude and f is frequency.

Gravitational Potential Energy Between Masses

  • Gravitational potential energy between two masses is calculated with the formula: Ug = (-Gm₁m₂)/r, highlighting the negative potential associated with gravitational interactions.

Density and Gravitational Field

  • Density is defined as mass divided by volume: ρ = m/V.
  • The gravitational field strength (acceleration due to gravity) is given by: g = Fg/m, where Fg is the gravitational force acting on a mass m.

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