Equation revision...

• Created by: Waldron16
• Created on: 16-11-13 16:49
what is energy?
It cannot be created or destroyed. It is the ability to do work.
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What is the formula for work done?
Work done (joules) = force (Newtons) x distance (metres)
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What is the formula for power?
Power (Watts)=Work done (Joules) (energy transferred) ÷ Time (seconds)
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What is the formula for Gravitational potential energy?
Gravitational potential energy (joules) =mass (kg) x g (10N/kg) x height (metres)
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What is the gravitational field strength on earth?
10 N/kg
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What is the Kinetic energy formula?
Kinetic Energy= 1/2 x mass x speed2 (squared)
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What is the formula for momentum?
Momentum (kgm/s)= mass (kg) x velocity (m/s)
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What is the law of the conservation of momentum?
The momentum before an event will always be the same as the total momentum after the event.
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What is the formula for moments?
Moment or turning effect of a force (Nm) =force (N) x distance from pivot point (m)
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What is the centre of mass?
The point in an object where we can say that the whole mass of the object is concentrated. An object balances on its centre of mass,
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What is the definition of a time period of a pendulum?
The time it takes for a pendulum to swing from one side to the other and back again.
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How does the length and height of a pendulum effect the time period?
The longer the pendulum , the longer the time period. The higher it is dropped from makes no difference to the time period.
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What is the formula for the frequency of a pendulum?
frequency (amount of swings in 1 second) (Hertz) =1 ÷ time period (secs)
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What is the formula for pressure?
Pressure(pascals) =force (N) ÷ Cross sectional area (m2)
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What is the formula for Hookes law?
spring constant x extension
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What is the formula for acceleration
change in velocity ÷ time taken
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Other cards in this set

Card 2

Front

What is the formula for work done?

Back

Work done (joules) = force (Newtons) x distance (metres)

Card 3

Front

What is the formula for power?

Back Card 4

Front

What is the formula for Gravitational potential energy?

Back Card 5

Front

What is the gravitational field strength on earth?

Back 