Part of the Series: Show Me Science Series - Advanced

Kinesiology is the study and application of physics to body movement - energy, work, friction and inertia. This program explores the application of Newton's Three Laws of Motion in baseball regarding pitching and hitting. Kinesiologists at the American Sports Medicine Institute use video motion capture to study the biomechanics of a pitcher's delivery to optimize performance and help reduce injury.

Running Time

16 mins

Year

2005

Kanopy ID

1101827

Languages

Subjects

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Physics Demonstrations in Mechanics: Part II

Concepts Covered:

- Newton's 1st Law: Rest Inertia of Massive Ball
- Newton's 2nd Law: Effects of a Varied Net Force on a Body's Motion
- Newton's 3rd Law: Reaction Cart/Projected Ball Bearings
- Terminal Velocity: Air Resistance Acting on a Free-Falling Body (Stroboscopic Photography)
- Motion of Center of Mass: System with Internally…

Causes of Motion

For most people, the hardest part of learning physics is to stop thinking like Aristotle, who believed that force causes motion. It doesn't. Force causes change in motion. Learn how Galileo's realization of this principle, and Newton's later formulation of his three laws of motion, launched classical physics.

Fluid Dynamics

Explore fluids in motion. Energy conservation requires low pressure where fluid velocity is high, and vice versa. This relation between pressure and velocity results in many practical and sometimes counterintuitive phenomena, collectively called the Bernoulli effect: explaining why baseballs curve and how airplane speedometers work.

Newtonâ€™s Laws Of Motion

Physics is frequently one of the hardest subjects for students to tackle because it is a combination of two of the toughest subjects for most students: Math and Word Problems. What sets this series apart from other physics teaching tools is that the concepts are taught entirely through step-by step…

Physics Demonstrations in Mechanics: Part III

Concepts Covered:

- Graphical Analysis of Motion: Car Accelerating on Highway (Computer Animation)
- Vector Addition: Object Traveling on Moving Surface
- Velocity and Acceleration Vectors: Direction of v and a during Acceleration and Deceleration
- Newton's 1st Law: Rest Inertia of Bursting Water Balloon; Shattering Flask; and Concrete Block Receiving Sharp Blow…

Falling Freely

Use concepts from the previous episode to analyze motion when an object is under constant acceleration due to gravity. In principle, the initial conditions in such cases allow the position of the object to be determined for any time in the future, which is the idea behind Isaac Newton's clockwork…

Rotational Motion

Turn your attention to rotational motion. Rotational analogs of acceleration, force, and mass obey a law related to Newton's second law. This leads to the concept of angular momentum and the all-important -conservation of angular momentum, which explains some surprising and seemingly counterintuitive phenomena involving rotating objects.

It's a 3-D World!

Add the concept of vector to your physics toolbox. Vectors allow you to specify the magnitude and direction of a quantity such as velocity. The vector's direction can be along any axis, allowing analysis of motion in three dimensions. Then use vectors to solve several problems in projectile motion.

Heat Transfer

Analyze heat flow, which involves three important heat-transfer mechanisms: conduction, which results from direct molecular contact; convection, involving the bulk motion of a fluid; and radiation, which transfers energy by electromagnetic waves. Study examples of heat flow in buildings and in the sun's interior.

Newton's Laws in 2 and 3 Dimensions

Consider Newton's laws in cases of two and three dimensions. For example, how fast does a rollercoaster have to travel at the top of a loop to keep passengers from falling out? Is there a force pushing passengers up as the coaster reaches the top of its arc? The answer…

Action and Reaction

According to Newton's third law, for every action there is an equal and opposite reaction. Professor Wolfson has a clearer way of expressing this much-misunderstood phrase. Also, see several demonstrations of action and reaction, and learn about frictional forces through examples such as antilock brakes.

History's Mysteries

Begin this journey by taking a closer look at concepts that were once unexplainable but are now better understood. You'll focus on two such former mysteries: the existence of an invisible "aether" through which light and sound were believed to travel and the orbit of Mercury, which seemed to violate…

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