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- Multiple ChoicePlease save your changes before editing any questions.units of force arenetwonsgramsjoulesmeters
- Multiple ChoicePlease save your changes before editing any questions.units for work arenetwonsjoulesmetersseconds
- Multiple ChoicePlease save your changes before editing any questions.if you push a cart with a force of 60 N for 2 m... how much work have you done120 J30 J120 N30 N
- Multiple ChoicePlease save your changes before editing any questions.both work and energy are measured injoulesnewtonsmetersseconds
- Multiple ChoicePlease save your changes before editing any questions.The unit used to measure power is theWattNewtonJouleNewton*meter
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is the best example of work being done.
studying for a test
lifting a box
carrying groceries into your house
holding a box
- Multiple ChoicePlease save your changes before editing any questions.Work done = Force x _________a. distanceb. accelerationc. velocityd. speed
- Multiple ChoicePlease save your changes before editing any questions.Energy due to motion is ____________ energy.PotentialEnergyKineticFriction
- Multiple ChoicePlease save your changes before editing any questions.The faster an object moves, the ________ kinetic energy it has.morelessnone of the aboveall of the above
- Multiple ChoicePlease save your changes before editing any questions.__________ is stored energy.PotentialKineticNone of the aboveAll of the above
- Multiple ChoicePlease save your changes before editing any questions.
At which point is potential energy greatest?WXYZ - Multiple ChoicePlease save your changes before editing any questions.What kind of energy is in a rock at the edge of a cliff?PotentialKineticBoth potential and kinetic energynone of the above
- Multiple ChoicePlease save your changes before editing any questions.Which is the best example that something has kinetic energy?a. a car parked on a steep hillb. a tennis ball rolling across the courtc. a picture hanging on the walld. a piece of coal before it's burned
- Multiple ChoicePlease save your changes before editing any questions.What are the two factors that affect kinetic energy?time and energypower and massmass and speedtime and work
- Multiple ChoicePlease save your changes before editing any questions.At which point is kinetic energy greatest?WXYZ
- Multiple ChoicePlease save your changes before editing any questions.The unit used to measure work is theWattNewtonJoulemeter
- Multiple ChoicePlease save your changes before editing any questions.The more POWER you use to move an object, the more work you do.TrueFalse
- Multiple ChoicePlease save your changes before editing any questions.What is the equation for power?P = Work/timeP = Force/timeP = time/distanceP = Work * time
- Multiple ChoicePlease save your changes before editing any questions.Which of the following would result in an increase in power?Decrease the amount of time to do work.Increase the amount of time to do work.Decrease the distance moved.Decrease the amount of work done.
- Multiple ChoicePlease save your changes before editing any questions.A Mustang has more horsepower than your mom's minivan. What does this mean?The Mustang has a higher topspeed.The minivan has a worse gas mileage.The Mustang can do work faster.The Mustang will die.
- Multiple ChoicePlease save your changes before editing any questions.
The factor that has the greatest effect on kinetic energy is
mass
weight
velocity
time
- Multiple ChoicePlease save your changes before editing any questions.
As a falling apple approaches the ground, its potential energy
increases
decreases
stays the same
- Multiple ChoicePlease save your changes before editing any questions.
As a falling apple approaches the ground, its kinetic energy
increases
decreases
stays the same
- Multiple ChoicePlease save your changes before editing any questions.
A girl carries a heavy suitcase quickly up a flight of stairs. A boy of the same weight carries the same suitcase slowly up the flight of stairs. Which statement is true?
The girl did less work and had less power than the boy
The girl had less power than the boy
The girl did more work and had more power than the boy
The girl had more power than the boy
- Multiple ChoicePlease save your changes before editing any questions.
Which ball has the greatest kinetic energy?
A
B
C
D
E
- Multiple ChoicePlease save your changes before editing any questions.
By increasing the speed at which you do work, you increase your
Work
Energy
Power