Vocabulary
What's a joule?
unit of energy
The unit of potential energy
Joules
What has more kinetic energy object A which has a mass of 2kg and a velocity of 2m/s, or object B which has a mass of 1kg and a velocity of 3m/s.
object B
A position where it established that an object has no potential energy
the ground
What is the term for the smallest particle that makes up all matter?
Atom
A roller coaster is at the top of the track. What kind of energy does it have?
Potential
The type of energy found in car batteries.
chemical potential
What is the kinetic energy of a 55 kg boulder rolling down a hill at 10.2 m/s?
2861.1 J
The kinetic energy of a ball at the bottom of a hill equals________.
the same as the potential energy at the top
What is the national flower of Japan?
Cherry blossom
A ball is rolling down a hill. What kind of energy does it have?
kinetic
What is the gravitational potential energy of a
24.5 joules
A 1400 kg podracer is flying at 150 km/h. What is the podracer’s kinetic energy?
1215277.78 J
A 9.00 kg object fall off a 1.2 m high table. If all of the objects potential energy is converted into kinetic energy just before it hits the floor, how much kinetic energy will it gain? How fast is it moving?
105.84 J
4.85 m/s
What is the name of the reindeer in Frozen?
Sven
What is the type of potential energy determined by the amount of work gravity could do?
gravitational potential energy
An object has 65 J of gravitational potential energy, and is located 2.5 m above the ground. What is the mass of the object?
2.653 kg
A lightsaber is moving at 8.5 m/s with a kinetic energy of 470 J . What is the mass of the lightsaber?
13.01 kg
A 50 kg object has a velocity of 45 m/s right before hitting the ground. How high was this object dropped?
103.32 m
Which country has the most active volcanoes?
indonesia
what is the Law of Conservation of Energy?
Energy cannot be created or lost, only transferred or transformed
A 15 kilogram boulder sitting on top of a 1525 m mountain begins to roll down the mountain at 15 m/s . What is the potential energy of the boulder?
224,175J
The kinetic energy of a 2000 g droid is 500 J. What is the speed of the droid?
22.36 m/s
A 550 kg car rollercoaster is initially at rest at the top of a hill at 10m above the ground. What is the initial PE of the car at this point? When it reaches a point on a rollercoaster that is 5m above the ground, what is the kinetic energy of the car? What is the speed of the car at this point?
54000 J
27000 J
9.9 m/s
When you mix all the colors of light, what color do you get?
Answer: White.