Study Guide for Unit 5/6 Test

Work

  • Definition
  • Equation
  • Units
  • Relationship to direction of force
  • Work-Energy Theorem

Power

  • Definition
  • Equation
  • Units
  • Conversion to horsepower

Energy- Gravitational Potential, Kinetic, Elastic Potential

  • Definition
  • Equation
  • Units
  • What happens to Ug if height increases?
  • What happens to K if velocity is tripled?
  • How much elastic potential energy does a spring have if it is uncompressed or un-stretched (in other words: @ equilibrium)?
  • If spring A has a higher spring constant than spring B, which spring has greater stiffness?
  • How is the spring constant determined from a Force vs. Elongation graph?
  • Equation for this: F=kx

Conservation of Energy

  • Definition
  • Ugi + Ki + Usi = Ugf + Kf + Usf
  • Know how to convert from one type of energy to another

Momentum

  • Definition
  • Equation
  • Units
  • Impulse Definition
  • Impulse Equation
  • Determine impulse from a Force vs. Time graph
  • How did "soft hands" affect the egg's impulse or ΔP in the egg toss?
  • What is the momentum of an object at rest?

Conservation of Momentum

  • Definition
  • mAvAi + mBvBi = mAvAF + mBvBf
  • If two moving objects collide and end at rest, what is true of the magnitude of their momenta?
  • If a quarterback throws a football to a receiver who catches it and runs with it, what is the relationship between the velocities of the receiver and football after he catches it?
  • What does a negative momentum indicate?

Work

  • Definition
  • Equation
  • Units
  • Relationship to direction of force
  • Work-Energy Theorem

Power

  • Definition
  • Equation
  • Units
  • Conversion to horsepower

Energy- Gravitational Potential, Kinetic, Elastic Potential

  • Definition
  • Equation
  • Units
  • What happens to Ug if height increases?
  • What happens to K if velocity is tripled?
  • How much elastic potential energy does a spring have if it is uncompressed or un-stretched (in other words: @ equilibrium)?
  • If spring A has a higher spring constant than spring B, which spring has greater stiffness?
  • How is the spring constant determined from a Force vs. Elongation graph?
  • Equation for this: F=kx

Conservation of Energy

  • Definition
  • Ugi + Ki + Usi = Ugf + Kf + Usf
  • Know how to convert from one type of energy to another

Momentum

  • Definition
  • Equation
  • Units
  • Impulse Definition
  • Impulse Equation
  • Determine impulse from a Force vs. Time graph
  • How did "soft hands" affect the egg's impulse or ΔP in the egg toss?
  • What is the momentum of an object at rest?

Conservation of Momentum

  • Definition
  • mAvAi + mBvBi = mAvAF + mBvBf
  • If two moving objects collide and end at rest, what is true of the magnitude of their momenta?
  • If a quarterback throws a football to a receiver who catches it and runs with it, what is the relationship between the velocities of the receiver and football after he catches it?
  • What does a negative momentum indicate?