Law of Conservation of Energy
The definition of the law of conservation of energy.
What is energy can be never be created or destroyed?
The formula for potential energy.
What is PE= mgh?
A ball is dropped from the atrium. This is when kinetic energy is greatest.
When is right before hitting the ground?
While he and his family are moving, Joshua drags his suitcase 12.64 m from the front door to the car at a constant speed of .43 m/s. He does this with a horizontal force of 87.0 N. How much work does he do to overcome friction?
What is 1100 J?
While he and his family are moving, Joshua drags his suitcase 12.64 m from the front door to the car at a constant speed of .43 m/s. He does this with a horizontal force of 87.0 N. If he does all of this within 17 s, how much power has he put out?
What is 65 W?
The position where kinetic and potential energy are proven to be equal.
What is the midpoint?
The position where the potential energy is at its lowest.
What is the bottom?
The definition of kinetic energy.
What is "moving" energy?
If Aimee does 5.1 J of work to move her dresser drawer a distance of 2.3 m, how much power did she have to exert?
What is 2.2 N?
If Aimee does 5.1 J of work to move her dresser drawer a distance of 2.3 m and all of this is done in 8 s, how much power has been exerted?
What is .64 W?
This type of energy that is stored in food and is the energy of molecular bonds.
What is chemical energy?
Look at the roller coaster drawn on the board. Potential energy is the highest at this point.
What is point A?
A 4 kg ball is n a 5 m ledge, if it's pushed off, how much kinetic energy will it have just before hitting the ground?
What is 200 J?
The units of work.
What are joules?
A 60 watt bulb runs for 5 seconds. How much energy does it use?
What is 300 J?
A black toy truck is heading left with a mass of 6 kg at 12 m/s towards a red truck moving to the right with a mass of 8 kg at 10 m/s. When they collide, their new velocity is 5 m/s. What is the amount of thermal energy that is lost to this collision?
What is 700 J?
A rolling ball has 18 J of kinetic energy and is rolling 3 m/s. find its mass.
What is 4 kg?
A 2.3 kg mass attached to a horizontal mass-less spring with spring constant 54 N/m, is released 0.42 m from its equilibrium position. What is the mass' speed as it passes through its equilibrium position?
What is 2 m/s?
Calculate how much work was done if an object is pulled at an angle of 47 degrees along a 6 m path with a force of 13 N.
What is 53 J?
You push down on a 30 N box for 10 minutes. how much power is used?
What is 0 W?
A 25 kg ball is thrown into the air, going 10 m/s. How high does it travel?
What is 5 meters?
Which has more potential energy: An empty plane or a full plane? (both are flying)
What is the full plane?
KE = 100 J, v = 2 m/s. What is the object's mass?
What is 50 kg?
Person A and Person B are competing against each other, they both can lift 75 kg boxes 3.5 m off of the ground. Person A lifts her box in 1.5 s and Person B lifts his box in 2.4 s. Which person does more work?
What is NEITHER?
Person A and Person B are competing against each other, they both can lift 75 kg boxes 3.5 m off of the ground. Person A lifts her box in 1.5 s and Person B lifts his box in 2.4 s. Which person uses more power?
Who is Person A?