Physics Unit One Terms

15 flashcards · Physics · by Mae Myers

1. frame of reference

   defines relative motion

2. displacement

   length of a straight line from initial to final position

3. displacement formula

   ΔX= xf - xi

4. Average velocity formula

   VA=Δx/Δt

5. velocity

   speed and direction, rate of change in position

6. Pos/neg velocity: speed = magnitude, magnitude = absolute value -7m/s faster then -2m/s

7. Constant velocity

   slope is same

8. Instantaneous velocity

   velocity of an object under motion at a specific point of time

9. Acceleration

   rate of change in velocity

10. acceleration formula

    a=∆v/∆t m/s2

11. ∆V=a*∆t ∆t=∆V/a

12. speed

    no direction, only magnitude

13. average speed formula

    distance/time

14. deceleration

    decrease in speed

15. Acceleration has direction and magnitude when ∆V is positive, A is positive when ∆V is constant, A is zero when ∆V is negative, A is negative