Kinetic Energy Flashcards
Kinetic energy is energy of…
Movement.
Anything that is moving has…
Kinetic energy.
What is the formula for kinetic energy?
1/2 x mass x speed2 = kinetic energy.
Kinetic energy depends on both…
Mass.
Speed.
The more it weighs and the faster it’s going…
The more kinetic energy it has.
Small mass, not fast…
Low kinetic energy.
Kinetic energy transferred is what?
Work done.
To slow a car down what needs to happen?
The kinetic energy needs to be converted into other types of energy.
What does the conservation of energy state?
That energy can never be destroyed or created.
Only converted into different forms.
To stop a car, what does the kinetic energy covert into?
Heat energy as friction between the wheels and the brake pads cause temperature of the brakes to increase.
M stands for?
Mass of car and passengers.
kg.
V stands for?
Speed of car.
m/s.
F stands for?
Maximum breaking force.
N.
D stands for?
Braking distance.
m.
Falling objects covert ______ _____ into ______ _____
Potential energy - Ep.
Kinetic energy - Ek.
Further it falls…
Faster it goes.
Kinetic energy gained=
Potential energy lost.
Some kinetic energy is converted into…
Heat.
Sound.
When meteors and space shuttles enter the atmosphere they have what?
Very high kinetic energy.
Friction due to collisions with….
Particles.
Friction due to collisions with particles in the atmosphere transfers…
Some kinetic energy to heat energy and work is done.
Why do meteors not hit the earth?
As they temperatures get so extreme they burn up.
What are the biggest meteors called?
Meteorites.
Space shuttles have heat shields made from what?
Special materials which lose heat quickly.
Allowing shuttle to re-enter the atmosphere without burning up.
