motion p2.1

• Created by: faiqa1331
• Created on: 07-10-18 06:19
• motion p2.1
• vectors and scalars (p2.1.2)
• vector
• has magnitude and distance
• example: volcity and displacement
• scalar
• only has magnitude
• exaples: distance and speed
• acceleration (p2.1.3)
• the change in velocity is called acceleration
• the gradient of a volcity-time grpah shows the accleleration
• EQUATION: acceleration (m/s2) = change in velocity (m/s) / time (s)
• distance time graph (p2.1.4)
• straight line shows stationary
• diagonal line shows constant speed
• a curve shows acceleration/deceleration
• gradient give you speed
• EQUATION: average speed (m/s) = total distance (m) / time (s)
• velocity time graph (p2.1.5)
• straigh line shows constant velocity
• a steep line shows acceleration
• gradient gives you accerelation
• the area under the graph shows the displacement
• EQUATION: velocity (m/s) = displacement (m) / time (s)
• motion and kenetic energy (p2.1.6)
• EQUATION:  kinetic energy (j) = mass (kg) * velocity2 (m/s) / 2
• SUVAT EQUATIONS
• v2 - u2 = 2as
• v = u + at
• s =  ut + 1/2at2
• s = (u+v/2) * t
• S = displacement  U = initial velocity  V = finaly velocity  A = acceleration    T = time