Random energy
This type of energy is considered heat energy.
Thermal
A bowling ball, baseball, golf ball, and ping pong ball are all rolling down a bowling lane at the same speed. Which one has the most kinetic energy?
Bowling ball
What is the potential energy of a 1.2 kg apple in a tree, 3.0 meters above the ground? PE = m·g·h (g = 9.8 m/s2)
5.4J
Gravitational potential energy depends on an object's _____________ and its _______________ above the ground.
mass and height
What is the _________energy of a 6 kg ball that was placed on a wall that was 12 m high? The answer after calculating is _________
potential, 705.6 or 706
True or false:
Jolita energy is a real type of energy
False
A hair dryer converts electrical energy into
Thermal energy
What is the potential energy of a 150 kg boulder on a hill that is 40 meters high? PE = m·g·h (g = 9.8 m/s2)
58000J
When does a car no longer have kinetic energy?
When it is no longer moving
True or false:
A boy gets his 4-wheeler stuck in the mud. He pushes on the -wheeler. The 4-wheeler does not move. The boy has done work.
false
What type of energy cooks food in a microwave oven?
electromagnetic energy
A father and his 6 year old son race down a mountain on skis. If they're traveling at the same velocity, who has more kinetic energy? Assume the father has more mass than the son.
They both have the same energy
What is the kinetic energy of a 6kg ball rolling down a hill with a velocity of 4m/s
48J
As the height of an object _________, the gravitational energy _____________.
decrease, increase
What energy transformation occurs when an electric lamp is turned on?
electric to electromagnetic energy
When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy?
mechanical
Twins of identical mass decide to go for a run. One of them runs at 10 m/s and the other runs at 10 mph. Which twin has more kinetic energy.
The twin running at 10 m/s has more kinetic energy.
A 10 kilogram ball is rolling at 3 m/s. The ball has __________ energy. Calculate it.
45J
When does a rubber band, which has been shot at a wall, have the most potential energy?
When it is being stretched
What energy transformation occurs when a person riding a bike hears sound energy?
kinetic to sound energy
kinetic to electromagnetic energy
Name the energy conversions of a car.
mechanical to electrical to sound
electrical to mechanical to sound
etc.
A long distance runner runs three laps at 5 mph and in a desperate attempt to win she runs the last lap at 10 mph. How much does this velocity increase change her kinetic energy?
4 times or quadruples
You serve a volleyball with a mass of 2100 kg. The ball leaves your hand with a velocity of 30 m/s. The ball has ____________ energy. Calculate it.
945,000j
The gravitational potential energy stored between the motorcycle and earth _______________ as Jeffery rode up a hill
increased
What is the difference between the graphs of kinetic and mass and kinetic and speed.
The graph of speed and kinetic energy is curved and kinetic energy and mass is linear.