Physics

• Gravity - 9.81
• A small force applied at a large distance from a pivot can create a large moment
• Archimedes principle - the upthrust that acts on the object immersed in fluid is equal to the weight of the water/fluid that the object displaces
• Principle of moment - for equilibrium the sum of the clockwis moments must be equal the sum of the anticlockwise moment
• A moment is described as a turning force, or a force that causes a turning motion
• Longer time of impact means less force
• Conservation of momentum - the total momentum in a closed system will remain constant during an explosion or collision/ total momentum before = total momentum after
• Momentum is a measurement of how much resistance an object has to attempt changes in its motion
• Newton's first law - an object in motion will stay in motion unless acted upon by a resultant force
• Newtons second law - F = M A
• Newton's third law - force every action/force generates a equal and opposite reaction
• Potential difference - the difference in the amount if enery that charge carrier's have between two point in a circuit
• Potential difference - sometimes called voltage
• Current - rate of flow of charge ( coulomb)
• Resistance - restricts flow of current
• Voltage - energy per coulomb of charge
• Ammeter should be placed in series to the power
• Voltmeter parallel to the thing you are measuring