Work & Power
Power is measured in this unit.
What is watts?
Kinetic and Potential Energies.
What are two types of Energy
Most of the Earth's energy comes from this one place.
What is the sun?
This simple machine allows a smaller force to be applied over a longer distance.
What is a ramp?
The two factors that are used to calculate the kinetic energy of an object.
What are velocity and mass?
The transfer of gravitational potential energy to kinetic energy is called this.
What is work?
The energy which is determined based on motion.
What is kinetic energy?
The matter that seems to disappear during fission and fusion is converted to this.
What is Energy
The simple machine which turns about a fixed point called a fulcrum.
What is a lever?
A sled is at rest at the top of a slope 2 m high. The sled has a mass of 45 kg. The sled has ______ potential energy? (Formula: PE = mgh)
What is 882 J?
Work can transfer energy between objects and cause a change in the form of energy.
What is the relationship between work and energy?
The energy of an object because of its potential and kinetic energies.
What is mechanical energy?
A moving car hits a parked car, causing the parked car to move.
What is the transfer of kinetic energy?
The mechanical advantage of a pulley is this number.
What is 1?
A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. The mass of the roller is ______. (Formula: PE = mgh)
What is 800 kg
The power of a machine that does 600 J of work in 3s.
What is 200 W?
The energy that involves the flow of positive and negative charges.
What is electrical energy?
A person strikes and lights a match, potential energy in the match is transformed into which these types of energy.
What are thermal and radiant energy?
The mechanical advantage of a wedge that is 2 inches at its widest part and has a sloped side with a length of 10 inches is this number.
What is 5?
The kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s?
What is 25 J?
A machine can never be 100% efficient because some work is always lost to this factor.
What is friction?
The energy contained in atoms that is released by a splitting of proton and neutrons.
What is nuclear energy?
Wind spins turbines transforming kinetic energy to mechanical energy, activating generators. The generators transform ___________ energy to __________ energy.
What are mechanical to electrical?
These two simple machines can be found in a bicycle.
What is a lever and wheel and axle?
A car is moving at 12 m/s and has a mass of 600 kg. The kinetic energy of the car _____.
What is 43,200 J?