Flashcards
year 10 physics revision
Cards in this deck (16)
- 1kinetic energy calculation1/2 x m x v
- 2velocity calculationsquare all numbers
2 x Ek / mass - 3energy efficiency calculationuseful energy output / intended input
x by 100% - 4force calculationm x a
- 5what formula do we use to calc the speed that an object travels at?velocity calculation
2 x Ek / m (square all numbers) - 6what formula do we use to calc the mass that an object travels at?m = 2 x Ek / v
- 7work calculationF (force) x S (Speed)
- 8weight calculationM (mass) x G (gravity)
- 9what is energy?Energy is the ability to do work
- 10what are the main types of energy? (relevant options)gravitational potential energy (Ep)
energy efficiency (E.E)
kinetic energy (Ek) - 11what are the calculations of each type of energy?Ep = m x g x h
E.E = energy output/energy input x 100%
K.E = 1/2 x m x v - 12what is the law of conservation of energy?Energy cannot be created or destroyed but can be transformed into other forms of energy.
- 13what is an energy transformation?Energy transformations is a process that converts energy from one type to another. Any type of energy must contain a transformation. This is also called thermodynamics.
EXAMPLE : Rubbing hands together to make them warm is Kinetic energy ---> Thermal energy - 14What is Newton's FIRST law?An object will remain in a state of constant motion unless an unbalanced force acts on it. This means that an object travelling at a constant velocity can only change its speed or direction if an unbalanced force acts on it.
- 15what is inertia?Inertia is the tendency of an object to resist a change in its motion.
- 16—
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- using this to revise for my YEAR 10 EXAMINATIONS
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- Nicole Kipchumba
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