Review Sheet for Physics
Basics
1. Know what mass is and what its units are.
2. Know what velocity is and its units.
3. Know force and its units
Energy
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Define energy
State the units of energy
Define, describe, identify and calculate potential energy
Identify whether an object has a potential energy.
Define, describe, identify and calculate kinetic energy.
Identify whether an object has a potential energy.
Define and calculate mechanical energy.
Describe energy transformations as an object moves around a roller coaster in terms of potential, kinetic and
mechanical energy.
Describe the conditions needed for mechanical energy to be conserved
Describe the conditions where mechanical energy is not conserved.
If mechanical energy is not conserved- where does it go?
State and apply the law of conservation of energy.
Define work.
Be able to read a situations and determine whether the work on the system is positive or negative.
Describe what happens to object’s energy when negative work is done on it.
Describe what happens to an object’s energy when positive work is done on it.
Momentum
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Define and describe momentum
Know the symbol for momentum
Know the units for momentum
Calculate the momentum of an object
Compare different object’s momentums- which one has the greater momentum
Describe how impulse changes an object’s momentum
Define, describe and calculate impulse–(it is equal to two things!!!!)
Solve bounce problems
Keep direction in mind with momentum problems (positive momentum, negative momentum)
Solve conservation of momentum problems including:
a. explosion problems
b. elastic collisions
c. inelastic collisions
Forces
1. Define force
2. Calculate net force given an object’s mass and acceleration
3. Draw a free body diagram
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Given different forces acting on an object, be able to calculate the net force on it.
Find an object’s acceleration, given its mass and force, especially in relation to problems like the one above.
Differentiate between weight and mass
Calculate weight.
Find the normal force for objects sitting on a flat surface
Define and calculate friction.
Break forces down into their components
Find the resultant force for forces acting vertically and horizontally
Add forces acting an angles to one another
Find the tension in ropes hanging at angle
Gravity
1. Calculate the gravitational attraction between objects.
2. Discuss how distance and mass alter the gravitational attraction between objects
3. Describe the basic structure of the universe