1 / 7

ACCELERATION

February 2014. ACCELERATION. How do we measure changes in velocity?. Acceleration The rate at which velocity changes An object accelerates if its speed, direction or both change. The acceleration of an object is directly proportional to the net force applied to it

marcellus-alston
Download Presentation

ACCELERATION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. February 2014 ACCELERATION

  2. How do we measure changes in velocity? • Acceleration • The rate at which velocity changes • An object accelerates if its speed, direction or both change

  3. The acceleration of an object is directly proportional to the net force applied to it • The BIGGER the force, the MORE the acceleration • The acceleration of an object is inversely proportional to the mass of the object • The BIGGER the mass, the LESS the acceleration

  4. Calculating average acceleration • Acceleration = ∆V/ t Vf = final velocity Vi = initial velocity

  5. Special formulas

  6. Units for acceleration: • Speed and velocity are easily measured in distance/time units (such as km/hr, m/s) • Units for acceleration are more complicated: • Sample problem: What is the acceleration if we speed up from 10km/h to 30 km/h in 10 seconds? • Acceleration= ∆V = 30 km/h – 10 km/h = 2 km/h/s t 10 sec • Distance/time/time

  7. Summary • How fast = SPEED • How fast and in what direction = VELOCITY • How quickly velocity changes = ACCELERATION • The term “acceleration” - velocity increases • The term “deceleration” - velocity decreases (or negative acceleration)

More Related