First your brain sends a signal to move into position. This is electrical energy. Then your muscles react to the ball coming towards you which is chemical energy. After the ball hits into the leather glove it vibrates which is sound energy. Last you close your glove around the ball, clamping it tight into your glove.
When all three are combined and shaped into a ball, it is supposed to be solid, rubbery and bouncy. The ball is also supposed to be resistant to extreme environmental conditions, including heat, cold, aridity and humidity. Methods First measure out the following samples: Table 1: Each mixture has varying amounts of chemicals. Then mix them together in a beaker and form the mixture into a ball. Then test the ball by bouncing it on the table; observe its properties and record the results.
It is your preference whether you focus on the front of the basket, the back of the basket, an imaginary pair of lines leading upward from the side edges of the basket, the oval inside the basket, or another point of visual focus. The important thing is to be consistent with the one you use unless there is reason to change. The way you hold the basketball is also a very important step. Your hands should hold the basketball firmly enough to give you control of the basketball. As your arms raise the basketball, your shooting hand and it's elbow should move under the basketball.
Those who practice them are very fast because the key is to be fast and good reflexes. In addition, not everyone has good experiences at this game, especially in racquetball because beginners think it will be difficult to learn, or maybe they are afraid of getting hit in the eye. Also, playing those sports can increase cardiovascular health, endurance and muscular strength. Even though people assume that racquetball and squash are almost same, in reality, there are very differences. For scoring in squash and racquetball, all you need to do is hit a shot or serve that your opponent can’t reach before the ball bounces twice.
Longitudinal wave The vibrations of the object set particles in the surrounding medium in vibrational motion, thus transporting energy through the medium. For a sound wave traveling through air, the vibrations of the particles are best described as longitudinal. Longitudinal waves are waves in which the motion of the individual particles of the medium is in a direction that is parallel to the direction of energy transport. Sound waves in air (and any fluid medium) are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves. As the vibrating string moves in the forward direction, it begins to push upon surrounding air molecules, moving them to the right towards their nearest neighbor.
Next you want to see how it runs at high speeds. Do the brakes work, how straight is does it travel. Are you getting too much air trapped? This is called the parachute affect. You want to make sure that the wheels are properly aligned.
Eccentric An eccentric contraction is quite the opposite of a concentric contraction, this means the muscle lengthens as it contracts, a good example of this is where a footballer kicks the football the quadriceps muscle contracts concentrically to straighten the knee and the hamstring muscle contracts eccentrically to slow down the motion of the lower leg. This type of movement commonly is involved in muscle injuries. Isometric Contractions Isometric contracts are the ones which involve no muscle lengthening or shortening, this occurs when you are holding something heavy in front of you, the weight of the object is forcing the ares downwards but the muscles are contracting to counter balance the force, a sporting example of this would be when holding a tennis racket, there isn’t any movement in any of the joints in the hand, but the muscles are contracting to give a sufficient force to keep a strong and steady hold on the racket. The amount of force applied depends on the length of the muscle, each muscle has an optimum length and at this point the maximum isometric force can be produced. Isokinetic Contractions Isokinetic contracts are very similar to the isotonic contraction in the sense that the muscle will change length curing the contraction, where they become different is
Answer: I think that the plastic ball will be a lot lighter than the steel and golf ball, so that means that the plastic ball will not have as much effect when hitting the bottom of the cup as the golf or steel ball. I think the heavier ball will make the cup go back further because I think the heavier ball will pick up momentum quicker which will make the ball go faster which will make the ball hit the bottom of the cup at more force so it will move the cup further back. (6 points) |Score | | | 7. Use the data from your experiment to complete this data table. 8.
When a punch is thrown a boxer will remain in a balanced position. At the point of contact, the punch delivers a force that will knock their opponent off balance. The head, neck, or even the whole body can be moved with the force of a punch. Newton's second law is best stated with the equation F=ma. F stands for the net force acting on that body, m for the mass, and “a” for the acceleration of the body.
It can be expressed as a mathematical equation: or FORCE = MASS X ACCELERATION 3. “For every action there is an equal and opposite reaction.” This means that for every force there is a reaction force that is equal in size, but opposite in direction. That is to say that whenever an object pushes another object it gets pushed back in the opposite direction equally hard. The rocket's action is to