Newton's Laws
Potential Energy
Kinetic Energy
Vocabulary
Potpourri
100
What is Newton's 1st Law?
Inertia or An object at rest stays at rest and an object in motion stays in motion
100
Three things needed to calculate potential energy.
Mass, height, gravity
100
What two unknowns do you need to calculate kinetic energy
Mass and speed
100
A vehicles capacity to gain speed within a short time.
Acceleration
100
What's the difference between mass and weight?
Mass measures the amount of matter, weight measures the force of gravity
Mass is always the same but weight can change
200
What is Newton's 2nd Law?
Force = Mass x Acceleration
F=MA
200
At what point on the roller coaster will potential and kinetic energy be equal?
2
200
Which point would have the highest amount of kinetic energy?
3
200
Something that moves an object.
Force
200
Determine the net force and give the direction.
20N to the right
300
What's Newton's 3rd Law?
For every action, there is an equal, opposite reaction Action = Reaction
300
If placed at the same starting position on a ramp, which would have the least amount of potential energy? Why?
Golf ball, tennis ball, baseball, bowling ball
Golf ball because it has the smallest mass
300
What is the relationship between kinetic energy and speed?
As speed increases, kinetic energy increases
300
Movement of energy from one system to another.
Energy transfer
300
Heating a substance will cause the particle motion to _____.
Increase
400
Calculate the Force for Newton’s Second Law of Motion, if a 125 kg sphere is accelerating at 5 m/s2 - NO CALCULATORS
625 N
400
At what point on the roller coaster will potential and be highest?
1
400
Energy at 2 m/s would have how much kinetic energy (Joules)?
20 Joules
400
An object in motion stays in motion and an object at rest stays at rest unless application of force causes change in speed or direction.
Inertia
400
Energy transformation in the image below would include electromagnetic, chemical, and electrical. What order would the energy transformation occur?
Chemical > electrical > electromagnetic
500
What's the difference between Balanced and Unbalanced Force?
Balanced Force = 0 N
Unbalanced Force = Everything else
500
Three types of potential energy we discussed and give an example for two
Elastic - rubber band, spring, bow and arrow
Chemical - battery, food, fuel
Gravitational - dropping an object
500
The acronym for types of kinetic energy is MELTS - what does each letter stand for and give an example for two.
Mechanical (movement) - scissors, pulleys, bike
Electrical - lamp, toaster, cell phone
Light - sun, flashlight, camera
Thermal - oven, fire, microwave
Sound - music, bells, talking
500
Define potential energy and kinetic energy and how they are related.
Potential energy is stored energy and kinetic energy is moving or in use. The amount of potential energy an object has determines the amount of kinetic energy an object has. Potential energy is converted to kinetic energy and back to potential energy.
500
Cooling a substance will cause a _____ in particle motion. The space between molecules will get _____.
Decreases; smaller