Answer:
9080 N
Explanation:
Consider the two motions of the ball.
In the downward motion, initial velocity, u, is 0 (because it falls from rest) and the distance is 28.7 m. Using the equation of motion and using g as 9.8 m/s²,
v² = u² + 2as
v² = 0² + 2 × 9.8 × 28.7 = 562.52
v = 19.7 m/s
For the downward motion, the initial velocity is unknown, the final velocity is 0 and initial velocity is desired. g is negative because the motion is upwars.
0² = v² - 2 × 9.8 × 19.8
v² = 388.08
v = 10.7 m/s
The change in momentum = 0.502(10.7 -(23.7)) = 21.7868 kgm/s
The impulse = change in monetum
Ft = 21.7868 kgm/s
But t = 2.4 ms
[tex][tex]F = \dfrac{21.7868}{2.4\times10{-3}} = 9078 \text{ N}[/tex][\tex]
