Mika is the tallest player on their school volleyball team. She is in a spiking position when Ara gives her the perfect set. The 0.36-kg volleyball is 3.4 m above the ground and has a speed of 1.20 m/s. Mika spikes the ball, doing 9.7 J of work on it.
a. Determine the potential energy of the ball before Mika spikes it.
b. Determine the kinetic energy of the ball before Mika spikes it.
c. Determine the speed of the ball upon hitting the floor on the opponent's side of the net. (use KE = PE)
d. If Mika spikes the ball at the start of the court with a length of 30m, how much force does she need to spike the ball to the other end of the court?
e. What is the acceleration of the ball if Mika spikes it with 10 N of force?
f. If Mika spiked the ball towards South-East, what is the direction of the opposing force?
Answers
Answer:
I’m 176cm and back when I used to play for my school I was the most powerful spiker on the team.
It is hard to spike well at my height, taller athletes have a huge advantage obviously but it is still possible to be an amazing spiker if you’re just of average height.
What I did is set up a a regulation height net in my back yard. Then I measured out the correct size volleyball court and spaced out some small rocks to mark out the lines.
Then I practiced. I destroyed 2 volley balls learning how to be an exceptional spiker. The leather shiny surface finish peeled off and the leather underneath eventually wore through.
I’d simulate a set with a gentle underarm throw and then leap and spike. Fetch the ball and do it in the other direction. Simulated set, spike, fetch and on and on and on.
By the time volleyball season came round my spikes were perfect. They turned an ordinary volleyball into a deadly missile. If that thing struck you it stung. It was like being punched and smacked at the same time. I even broke a couple of opposition fingers when they tried to block.
So no. 175 isn’t too short but you’ll probably have to put in some extra training if you want to be good.
Answer:
I’m 176cm and back when I used to play for my school I was the most powerful spiker on the team.
It is hard to spike well at my height, taller athletes have a huge advantage obviously but it is still possible to be an amazing spiker if you’re just of average height.
What I did is set up a a regulation height net in my back yard. Then I measured out the correct size volleyball court and spaced out some small rocks to mark out the lines.
Then I practiced. I destroyed 2 volley balls learning how to be an exceptional spiker. The leather shiny surface finish peeled off and the leather underneath eventually wore through.
I’d simulate a set with a gentle underarm throw and then leap and spike. Fetch the ball and do it in the other direction. Simulated set, spike, fetch and on and on and on.
By the time volleyball season came round my spikes were perfect. They turned an ordinary volleyball into a deadly missile. If that thing struck you it stung. It was like being punched and smacked at the same time. I even broke a couple of opposition fingers when they tried to block.
So no. 175 isn’t too short but you’ll probably have to put in some extra training if you want to be good.
Hope it helps