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- 1. Multiple Choice
A FORCE
is a push
can cause motion
is needed to produce work
is very limited
- 2. Multiple Choice
ALL of the following are energies except
Magnetic
Sound
Heat
Nuclear
- 3. Multiple Choice
What is the force that causes everything to be pulled down to the Earth?frictiongravitybalancedunbalanced - 4. Multiple ChoiceA measurement of how fast an object is movingVelocitySpeedVectorAcceleration
- 5. Multiple ChoiceSpeed is equal toDistance/TimeTime/DistanceTime x DistanceAcceleration
- 6. Multiple Choice
What is the speed of a cheetah that travels 112.0 m in 4.0 s?
0.0357 m/s
8 m/s
0.036 m/s
28.0 m/s
- 7. Multiple Choice
What is the unit for FORCE?
N (Newtons)
lbs (pounds)
g (grams)
m/s (meters per second)
- 8. Multiple Choice
Match the description to the graph:
"The car is stopped."
- 9. Multiple ChoiceCan be measured in meters (m)DistanceTimeSpeedAcceleration
- 10. Multiple Choice
A soccer ball rolls very slowly toward a soccer player. What happens if the player kicks the ball as hard as she can?
The ball will change direction and decrease in speed.
The ball will change direction and increase in speed.
The ball will travel in the same direction and decrease in speed.
The ball will travel in the same direction and increase in speed.
- 11. Multiple ChoiceThe Law of Conservation of Energy states:Energy can created or destroyed but not transformedEnergy cannot be created or destroyed, it can only transformedEnergy can't be created, destroyed or transformed
- 12. Multiple ChoiceWhich energy transformation below matches?
Animals eating food?electrical to potentialchemical to kineticpotential to chemical - 13. Multiple ChoicePotential or kinetic?
Stretched bow and arrow?kineticpotential - 14. Multiple ChoicePotential or kinetic?
Running?potentialkinetic - 15. Multiple Choice
The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?
mechanical to heat
sound to mechanical
potential to kinetic
kinetic to potential
- 16. Multiple Choice
Which point on the roller coaster's path represents the maximum potential energy?
- 17. Multiple Choice
Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case, the stored chemical energy in the logs was changed into
electrical energy.
mechanical motion.
heat and light energy.
electrical and heat energy.
- 18. Multiple Choice
A change from one form of energy to another is known as:
energy conversion
chemical energy
solar energy
- 19. Multiple Choice
Identify the correct energy transformation for the image below.
Elastic --> Kinetic --> Sound
Thermal --> Potential --> Gravitational
Kinetic --> Gravitational --> Sound
Sound --> Elastic --> Kinetic
- 20. Multiple Choice
Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?
Chemical → light
Electrical → chemical
Electrical → light
Chemical → electrical
- 21. Multiple Choice
Electrical Energy is transferred to _____ Energy.
Thermal
Solar
Electrical
None
- 22. Multiple ChoiceAccording to the Law of Conservation of Energy, energy cannot be _________ or ____________.destroyed, destroyedcreated, savedcreated, destroyedlost, found
- 23. Multiple Choice
Which is the correct unit for work?
Joules
Newton
meter
Watts
- 24. Multiple Choice
Newtons are the correct unit for which of the following?
Force
Work
Power
Acceleration
- 25. Multiple Choice
What is the correct unit for power?
Watt
Joules
Newtons
seconds
- 26. Multiple Choice
It took 50 Joules to push a chair 5 meters across the floor. With what force was the chair pushed?
10 N
0.1 N
250 N
1 N
- 27. Multiple Choice
What is the power of a kitchen blender if it can perform 3,750 Joules of work in 15 seconds?
250 W
0.004 W
56,250 W
25 W
- 28. Multiple Choice
What is the force on a 2.4 kg skateboard accelerating at a rate of 2 m/s2?
4.8 N
1.2 N
0.83 N
2 N
- 29. Multiple Choice
How much power is used if a force of 35 Newtons is used to push a box a distance of 10 meters in five seconds? (Hint: Solve for work first. This is a 2-step problem.) ADVANCE
70 W
3.5 W
7 W
350 J
- 30. Multiple Choice
It took 500 Newtons of force to push a car four meters. How much work was done?
2000 J
125 J
0.008 J
500 J
- 31. Multiple ChoiceTrue or false
You do work only when you exert a force on an object and move ittruefalse - 32. Multiple Choice
Which of the following is the best example of work being done.
doing homework
lifting a box
pushing a stationary box
holding a box
- 33. Multiple ChoiceWork done = Force x _________a. distanceb. accelerationc. velocityd. speed
- 34. Multiple ChoiceForce is a _____ or _______simple complexpush pullup downin out
- 35. Multiple Choice
What formula is used to calculate force?
F=md
F=ma
F=mg
F=mt
- 36. Multiple Choice
What formula is used to calculate power?
P=Ft
P=F/t
P=Wt
P=W/t
- 37. Multiple Choice
Work can not be done in the absence of ______________.
time
electricity
motion
heat
- 38. Multiple ChoicePressure is measured in what unitsNewtonsm/sPascalsMoles
- 39. Multiple ChoicePressure is equal to force divided by whatareamasstimedistance
- 40. Multiple ChoiceStored energy.Potential EnergyKinetic Energy
- 41. Multiple ChoiceThe energy of motion.Potential EnergyKinetic Energy
- 42. Multiple ChoicePotential EnergyKinetic Energy
- 43. Multiple ChoiceThe faster an object moves, the ________ kinetic energy it has.morelessnone of the aboveall of the above
- 44. Multiple ChoiceWhat kind of energy is in a rock at the edge of a cliff?PotentialKinetic
- 45. Multiple ChoiceExplain what happens to the potential energy of a rock as it falls off the side of a cliff.The kinetic energy decreases as the potential energy increases.The kinetic energy decreases as the potential energy decreases.The potential energy decreases as the kinetic energy increases.The potential energy decreases as the kinetic energy decreases.
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