Week 10s: Kinetic Data Interpretation Worked Jump Height Calculation Dr. Andrew Greene

Vertical Velocity TO vf (vt-o) = ? vi (vt-d ) = -2.18 m·s-1 a = ? s = ? t = 0.56 seconds Mass = 88 kg Total Impulse = 763 N.s BW Impulse = 292.5 N.s Jump Impulse = 470.5 N.s Which Calculation do you select? Calculate the Vt-d (Vf) a = ? Vf = ? Vi = -2.18 m·s-1 Jump Impulse Impulse BW BW 0.56 seconds

Vertical Velocity TO Jump Impulse =  m x v Jump Impulse = m x vt-o – m x vt-d

Vertical Velocity TO Jump Impulse =  m x v 470.5 =  m x v 470.5 = m x vt-o – m x vt-d 470.5 = (88 x vt-o) – (88 x -2.18) 470.5 = 88 x (vt-o – -2.18) 470.5 + -2.18 = vt-o 88 vt-o = 3.16 m·s-1

Maximum Jump Height vi (vt-o) = 3.16 m·s-1 a = -9.806 m·s-2 s = ? vf = 0 m·s-1 vi (vt-o) = 3.16 m·s-1 a = -9.806 m·s-2 s = ? t = ? Which Calculation do you select? Calculate the Vt-d (Vf) Vf = 0 m·s-1 s = ? vi (vt-o) = 3.16 m·s-1

Maximum Jump Height vf2 = vi2 + 2.a.s vf = 0 m·s-1 vi (vt-o) = 3.16 m·s-1 a = -9.806 m·s-2 s = ? a = -9.806 m·s-2 s = ? vi (vt-o) =3.16 m·s-1 Vf = 0 m·s-1

Maximum Jump Height vf2 = vi2 + 2.a.s 02 = 3.162 + (2 x -9.806 x s)

Maximum Jump Height vf2 = vi2 + 2.a.s 02 = 3.162 + (2 x -9.806 x s) 0 = 9.99 + (-19.612 x s) 0 – 9.99 = -19.612 x s -9.99 = -19.612 x s -9.99 = s -19.612 s = 0.51 m (51cm)