SEMESTER REVIEW FOR FINAL EXAM

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1 SEMESTER REVIEW FOR FINAL EXAM

2 ACCELERATION When is an object s acceleration not equal to zero? What is the equation for acceleration?

3 ANGULAR SPEED AND MOMENTUM Does an object on the outside of a spinning disc have more, less, or the same angular speed as one near the center? When you spread your arms as you spin, why do you spin slower?

4 ATOMS Can you see an atom with your a. eye? b. light microscope? c. electron microscope? What universal force allows us to interact with objects?

5 CENTER OF GRAVITY What will an irregularly shaped object rotate around when it is thrown? How do you balance a kg mass placed m from the fulcrum when you only have a kg mass?

6 DENSITY If a g object takes up ml of space, what is its density? If the volume of the object doubles when you put it in water, how will this affect its density? Which will dissolve faster in water, a sugar cube or powdered sugar?

7 ELEMENTS What property of each element makes it unique? How do isotopes of the same element differ?

8 FREE FALL What is the relationship to the speed a ball is thrown upward and the speed in which it returns to the ground? How does the speed of an object change as it free falls?

9 FRICTION If a kg object is pushed with a N force, yet only accelerates at. m/s, what is the frictional force acting on the object? What is the frictional force of a N object sliding on a plane with a kinetic frictional constant of.?

10 FORCE How much force is required to keep an object in motion? What is meant by net force?

11 GRAVITY (INVERSE SQUARED LAW) When an object increases in mass, what happens to the force of gravity acting on it? What has the force of gravity holding you to the Earth always been precisely equal to? If the gravitational force between objects is N before the distance between them is halved, what is it afterward?

12 KINETIC ENERGY What two qualities are necessary for an object to have Kinetic Energy? In a frictionless environment, if an object starts its motion with J of potential energy and has J of potential energy seconds later, how much kinetic energy does it have?

13 MASS What happens to an object s mass as it moves away from Earth s surface? How do you convert mass into weight (on Earth)?

14 MECHANICAL ADVANTAGE If it requires N to lift a box m, how much force will be required to push the same box up a m ramp to the same height? If a simple machine has a mechanical advantage of, how much force can it accomplish when you put in N?

15 MOMENTUM What qualities are necessary for an object to have momentum? What operation do you perform with the quantities of these qualities in order to derive momentum? What can be said about the velocity of two objects that have run into each other as they were moving in the same direction?

16 NEWTON S FIRST LAW What type of objects have no inertia? Objects have more inertia if they have more.

17 NEWTON S SECOND LAW What will a constant force acting on a constant mass produce? If the force is doubled, how will this affect the object s acceleration? mass?

18 NEWTON S THIRD LAW Forces always happen in aspir (unscramble). What does a rocket push against in space so that it can be propelled forward? If you hit a wall, what will the wall s reaction be?

19 PHASES OF MATTER What is the primary determinant of which phase of matter a substance is in? If you increase the temperature of a gas and control for volume, what relative pressure will result?

20 POWER How much power is required to do J of work for s? How much energy does a W lightbulb consume in s?

21 PROJECTILE MOTION In the absence of air resistance, which will travel further: an object thrown at degrees or an object thrown (with equal force) at degrees? If a ball rolls off a table at m/s, and you drop another ball at an equal height to the table simultaneously, which ball will hit the ground first?

22 RELATIVE MOTION When you are in a car moving at km/hr, how fast are you moving relative to the car? Relative to your house?

23 RELATIVITY Why don t we experience length contraction or time dilation when we drive to Navarre? How will a person at rest measure a moving object differently (by length) than a person on the moving object? How will time measured by a clock moving relative to your watch compare to time measured by your watch?

24 ROTATION AND SPIN When thrown, how does an irregularly shaped object rotate in the air? What does an object spin relative to?

25 VECTOR VS. SCALAR What do vector quantities have that scalar quantities do not? If you walk m to the East and m to the North, what distance have you travelled? How far are you displaced from your starting point?

26 VELOCITY / SPEED You run lap of a m track in s. What is the difference between your average speed and your average velocity? If you are running m/s and accelerate at m/s for seconds, what is your new velocity?

27 WEIGHT Would you weigh more on Earth or the moon? W = mg. What is the value of g?

28 WORK How much work is done when a person exerts N of force when moving a box m? What are the units for work, potential energy, and kinetic energy?

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