Units
Potential Energy
Kinetic Energy
Random 1
Random 2
100
What is the unit for mass (m)?
kg
100
Potential energy is _______ energy in an object based off of its position
stored
100
Kinetic energy is the energy of ______ objects
moving
100
T/F
Energy can be created and destroyed
False
100
Does the kinetic energy increase or decrease has a object rolls down a hill?
Increase
200
What is the unit for velocity (v)?
m/s
200
True/False. The higher an object is, the more potential energy it has.
True
200
T/F. The slower an object is moving, the more kinetic energy it has.
False.
200
What are the three types of energy discussed in this Unit?
Potential
Kinetic
Thermal
200
A roller coaster car has a mass of 1000 kg. It is moving along the track with a velocity of 25 m/s. What is the roller coaster car’s kinetic energy?
312,500
300
What is the unit for height (h)?
m
300
What is the equation for potential energy?
PE= m*g*h
300
What is the equation for Kinetic Energy
KE= 1/2*m*v2
300
What force causes energy to be lost as heat?
friction
300
Where does the person have the most potential energy?
X and Z
400
What is the number we use for g?
9.8 m/s2
400
A 14 kg object is held at a height of 2 m above the ground, what is its gravitational potential energy?
274.4 J
400
A 12 kg object is moving at a velocity of 4 m/s, what is its kinetic energy?
96 J
400
If position 1 has a kinetic energy of 0 J and a potential energy of 100 J. How much potential energy is at position 3?
0 potential energy
400
Label each as Potential or Kinetic energy
1. A bowling ball sitting on the rack
2. A race car going around a track
3. A spring in a pinball machine before it is released
1. potential
2. kinetic
3. potential
500
What is the unit for energy?
J
500
If I take a 1 kg brick that was sitting 1 m off the ground and lift it up to 4 m off the ground. How much is its new potential energy compared to the original (how many times bigger or smaller)
4x bigger
500
If an object has a potential energy of 155 J at the very top of its path, what is its kinetic energy at the very bottom of its path?
155 J
500
At what position does the girl have the only kinetic energy?
B
500
Energy cannot be _______ or _________, only _________
energy cannot be created or destroyed, only transformed.