Upcoming SlideShare
×

# Sailing physics pow pt 2012 edited

• 128 views

Newton's Second and Third Laws of Motion …

Newton's Second and Third Laws of Motion
Bernouli's Principle

More in: Education
• Comment goes here.
Are you sure you want to
Be the first to comment
Be the first to like this

Total Views
128
On Slideshare
0
From Embeds
0
Number of Embeds
0

Shares
0
0
Likes
0

No embeds

### Report content

No notes for slide

### Transcript

• 1. SailingConceptual Physicsannie cloutier 2012 copyrightWind Power is the ForceNweton’s Second Law F = m aNewton’s Third LawAction ~ ReactionBernoulli’s Principle
• 2. http://science.kqed.org/quest/video/the-physics-of-sailing/ Position  Is defined in relation to a reference point  Velocity is described by Velocity direction and speed of an object ∆ delta means change  Change in velocity is due to changes in speed, direction or both
• 3. An original idea…
• 4. Understanding Motion Speed  How fast an object is moving calculate by dividing the distance covered by time Instantaneous speed  The speed at any instant  Average speed is the total Average speed distance covered divided by the time Total distance  Is the average speed times the travel time
• 5. NEWTON’S THIRD LAW Action - ReactionFor every action there is an equal and opposite reaction When an object is subjected to multiple forces at once, the result is the cumulative effect of all the forces When forces on an object are balanced, the object will change its velocity When forces are not balanced, no acceleration occurs When a body A exerts a force on a body B, B exerts an equal and opposite force on A
• 6. Newton’s Third LawInversely proportional cannonball F/m =a Cannon F /m=a
• 7. Velocity and Acceleration Velocity  Acceleration Is speed in a given  Is the rate at which the direction velocity is changing Speed is a description  Acceleration can apply of how fast an object is to decreases as well as moving increases in speed Velocity is how fast  Deceleration is the and in what direction it decreasing of speed moves (slam on your brakes)
• 8. Conservation of Energy An unbalances force on an object produces a change in momentum States that the energy can not be created or destroyed Energy can be transferred from one form into another, but the total amount of energy never changes.
• 9. Bernoulli’s Principle
• 10. Pressure, push or pull is FORCE
• 11. Henri Coanda Romanian Jet Design scientist 1886-1972 andSir Frank Whittle British scientisthttp://www.youtube.com/watch?v=EYuNKarb8oY
• 12. http://web.mit.edu/2.972/www/reports/sail_boat/sail_boat.html  But you can never sail directly into the wind
• 13. Activity :Bernoulli’s Principle  5 cm wide x 28 cm long strip of paper  Blow across the top of the paper strip  Notice the position of the end of the paper.
• 14. The end