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IB Physics HL Definitions Study Guide Exam And Actual Answers.
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Displacement - Answer Position of an object relative to its starting position. Velocity - Answer Rate of change of displacement. Speed - Answer Rate of change of distance. Acceleration - Answer Rate of change of velocity. Newton's First Law - Answer An object continues in...

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  • November 21, 2024
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IB Physics HL Definitions Study Guide
Exam And Actual Answers.
Displacement - Answer Position of an object relative to its starting position.



Velocity - Answer Rate of change of displacement.



Speed - Answer Rate of change of distance.



Acceleration - Answer Rate of change of velocity.



Newton's First Law - Answer An object continues in uniform motion in a straight line/ at rest unless a
resultant force acts.



Newton's Second Law - Answer The acceleration of an object is proportional to and in the same
direction as its resultant force.



Newton's Third Law - Answer When 2 objects react, the exert equal and opposite forces on each other.



Linear Momentum - Answer The product of mass and velocity.



Impulse - Answer Change in momentum.



Law of conservation of momentum - Answer Momentum of object in system stays the same in a closed
system.



Work - Answer Force X distance moved in direction of force.



Kinetic Energy - Answer The energy an object has due to it's motion

, Change in GPE - Answer The energy an object has due to its position above the Earth.



Elastic Collision - Answer KE is conserved and objects bounce off with the same speed it did before in
opposite directions.



Inelastic Collision - Answer Maximum loss of KE, objects stick together & momentum is still conserved.



Explosion - Answer Objects move away from each other, internal energy becomes KE.



Efficiency - Answer Ratio of work out: energy put in.



Mole - Answer Amount of substance that has the same number of molecules as the number of of
molecules as the number of atoms in 12g of C-12.



Molar Mass - Answer Mass of 1 mole of the substance.



Avogadro's Constant - Answer Number of molecules in 1 mole = 6.022 × 10²³



Specific Heat Capacity - Answer The energy needed to increase the temperature of of 1 kilo of an
object by 1K.



Thermal Capacity - Answer The energy needed to increase the temperature of an object by 1K.



Specific Latent Heat - Answer Amount of heat needed to change the state of 1 kilo of a substance
WITHOUT a change in temperature.



Pressure - Answer Force per unit area.



Displacement (SHM) - Answer Distance away a particle is from its equilibrium position.

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