# Physics Unit 2

 The flashcards below were created by user andreabyerly on FreezingBlue Flashcards. What is "Speed"? rate at which distance is traveled What is "Instantaneous Speed"? how fast something is moving at a particular instant in time What is "Displacement" and what direction does it go? the straight-line distance between two points. Vector. Direction goes from start to finish. does not equal total distance traveled What is "Velocity" and what direction does it go? How fast something is moving and in what direction. Always goes the same direction as motion. What is the formula to find the average speed? s=d/∆t What is the formula to find the average velocity? V=∆x/∆t What is "Acceleration" and what direction? Rate of change of velocity. [Change of speed OR direction in velocity] -- If speeding up, same direction as movement-- If slowing down, opposite direction of movement What is ∆? Delta [Final-Initial] ∆t = t-t0 Define: Free Fall A= motion under only the influence of gravity -g or -9.8 m/s2 Kinematic Equation V= V=V0+at Kinematic Equation X= X=X0+V0t+1/2at2 Kinematic Equation V2 V2=V02+2a(X-X0) Kinematic Equation X-X0 1/2(V+V0)t Authorandreabyerly ID33851 Card SetPhysics Unit 2 DescriptionPhysics Unit 2 Updated2010-09-13T21:50:59Z Show Answers