1. Calculations and Worked Examples

2. Drop Jump Measures
Mass = 92kg Box Height = 0.20m Acceleration due to Gravity = m·s-2 (m/s/s) Impulse = 678 N.s BW Impulse = 280 N.s H
V t-d
V t-o

3. Calculations

4. Vertical Velocity TD
vf (vt-d) = ? vi = 0 m·s-1 a = m·s-2 s = 0.2 m t = ? Which Calculation do you select? Calculate the Vt-d (Vf)
s = 0.2m

5. Vertical Velocity TD
vf2 = vi2 + 2.a.s vf (vt-d) = ? vi = 0 m·s-1 a = m·s-2 s = 0.2 m vt-d2 = 02 + (2 x x 0.2) = vt-d = √ = m·s-1
s = 0.2m

6. Vertical Velocity TO
vf (vt-d) = ? vi = m·s-1 a = ? s = ? t = 0.31 seconds Mass = 92 kg Impulse = 678 N.s BW Impulse = 280 N.s Which Calculation do you select? Calculate the Vt-d (Vf)
a = ?
Vf = ?
Vi = m·s-1
Jump Impulse
Impulse BW BW
0.31 seconds

7. Vertical Velocity TO
Impulse =  m x v =  m x v 398 = m x vt-o – m x vt-d 398 = (92 x vt-o) – (92 x -1.98) 398 = 92 (vt-o ) 398 – 1.98 = vt-o 92 vt-o = 2.35 m·s-1

8. Maximum Jump Height
vf = 0 m·s-1 vi (vt-o) = 2.35 m·s-1 a = m·s-2 s = ? t = ? Which Calculation do you select? Calculate the Vt-d (Vf)
a = m·s-2
Vf = 0 m·s-1
s = ?
vi (vt-o) = 2.35 m·s-1

9. Maximum Jump Height
vf2 = vi2 + 2.a.s vf = 0 m·s-1 vi (vt-o) = 2.35 m·s-1 a = m·s-2 s = ? 02 = (2 x x s) 0 = ( x s) = x s = s s = 0.28 m (28cm)
a = m·s-2
Vf = 0 m·s-1
s = ?
vi (vt-o) = 2.35 m·s-1

10. Maximum Jump Height vf = 0 m·s-1 vi (vt-o) = 2.35 m·s-1
a = m·s-2
s = ?
t = ?
vf = vi + at
0 = * t
= * t
= t
-9.806
t = 0.24 seconds
s = vi t + ½ a t2
s = 2.35 * * * 0.242
s = *
s =
s = 0.28 m (28cm)

11. Maximum Jump Height
vf = 0 m·s-1 vi (vt-o) = 2.35 m·s-1 a = m·s-2 s = ? t = ?