< Day Day Up > |
Chapter 10, "Motion in Two and Three Dimensions"2D DisplacementD r = r f “ r i for position vectors r i (initial) and r f (final). Average Velocity in 2D and 3D
for any displacement vector D r and time interval t . Equations of Motion in 2D and 3Dv f = v i + at D x = ½( v f + v i ) t D x = v i t + ½ at 2 for vectors a, v f , v i , and D x and scalar t . Vertical Components of a Projectilea y = “9.8m/s 2 v fy = v iy + at D y = v iy t + ½ a y t 2 Horizontal Components of a Projectilea x = 0m/s 2 v x = D x / t |
< Day Day Up > |