Edexcel AS Physics Unit 1 : Chapter 3: Rectilinear Motion Prepared By: Shakil Raiman
3.1 Speed, Velocity and Acceleration Speed: Rate of change of distance. Velocity: Rate of change of displacement. Acceleration: Rate of change of velocity. Instantaneous Velocity: Velocity at an instant. Average speed: total distance travelled/ total time taken
3.2 Equation of Motion s = displacement or distance (m) u = initial velocity (ms -1 ) v = final velocity (ms -1 ) a = acceleration (ms -2 ) t = time (s) h = height (m) g = gravitational acceleration (ms -2 )
3.2 Equations of motion (Horizontal Plane)
3.3 Equations of motion (Vertical Plane- moving downward)
3.4 Equations of motion (Vertical Plane- moving upward)
3.5 Equations of Projectile motion if air resistance is negligible due to g the vertical part follow the equations of motion in vertical plane.
3.5 Equations of Projectile motion Flight time, maximum height, Range, R is max at =45
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