Presentation on theme: "PASS Content Standard 3.1 All energy can be considered to be either kinetic, which is the energy of motion; potential, which depends on relative position;"— Presentation transcript:
PASS Content Standard 3.1 All energy can be considered to be either kinetic, which is the energy of motion; potential, which depends on relative position; or energy contained by a field, such as electromagnetic waves.
A force that acts over a certain area. Pressure = Force Area
Does a corked bat hit a baseball farther than a normal wooden bat?
Why can a curveball be hit farther than a fastball?
Fastball: Hold the ball near the ends of your fingers and throw with a normal overhand delivery. The ball should roll off your fingers with a backwards spin (it will tend to rise). Outfielders usually throw the ball this way because the rising action allows them to throw it considerably farther.
Curveball: "Choke" the ball (wedge it down between your thumb and forefinger), and cock your wrist to the left; the ball snaps down and to the right on release. The resulting pitch should drop and curve to the left.
Screwball: Throw the ball like a curveball, but reverse the wrist action and spins. Cock the wrist initially to the right and "turn the ball over" to the left as you throw it. The ball should break down and to the right.
Slider: Throw the ball like a football pass, with the wrist cocked at a 90 degree angle. The ball should curve slightly down and to the left.
Archimedes Principle states that the buoyant force on a submerged object is equal to the weight of the fluid that is displaced by the object. A cylindrical mass and bucket are suspended from a spring scale above a beaker with an overflow spout. Note the scale reading.
Archimedes Principle states that the buoyant force on a submerged object is equal to the weight of the fluid that is displaced by the object. Submerge the mass by raising the beaker. Pour the water from the catch beaker into the hanging bucket to return to the original scale reading.