Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Day 2: What does it take to make an object Move?
Document related concepts
Modified Newtonian dynamics wikipedia , lookup
Hunting oscillation wikipedia , lookup
Coriolis force wikipedia , lookup
Faster-than-light wikipedia , lookup
Velocity-addition formula wikipedia , lookup
Fictitious force wikipedia , lookup
Newton's theorem of revolving orbits wikipedia , lookup
Equations of motion wikipedia , lookup
Classical mechanics wikipedia , lookup
Centrifugal force wikipedia , lookup
Length contraction wikipedia , lookup
Classical central-force problem wikipedia , lookup
Transcript
December 03, 2015 Day 2: What does it take to make an object Move? In order for any object to be set in motion it needs force. Force: A push or a pull that acts on an object. Objects with more mass are harder to move, which means you must apply more force. $Review Question: What is mass?$ The mass of an object tends to make the object resist being set into motion. In order to move an object you must use a force and overcome the objects inertia. Inertia: The tendency of an object to resist a change in its state of motion. December 03, 2015 So How does inertia affect the motion of objects? *If you were to drop a ball or roll a ball the ball will never go higher than its original start point, unless you apply force to the ball first. *Also once an object is set in motion it will moveforever in a straight line and a constant speed unless a force is acted on it. *Just as it takes force to set an object in motion, it also takes a force to slow or stop an object. *Galileo was the first person to discover inertia by rolling balls down a fixed incline. December 03, 2015 So what does it take to slow down or stop an object? In order to slow down or stop and object from moving you must apply a force. Any force that acts on an object that is moving is called Friction. Friction: A force that opposes the motion of one object moving past another. Click Here to Learn More December 03, 2015 How does force, inertia, and friction all go together? Well when you combine the idea of inertia, friction and force you get Newton's First Law of Motion. Sir Isaac Newton was the first person to publish a complete description of inertia. Newton's First Law of Motion: Objects at rest remain at rest and objects moving at a steady rate stay that way until a force acts on them. Click Here to Learn More December 03, 2015 So Let's Review? * What is friction? * What is Newton's 1st Law of Motion? * What is force? Directions: Complete questions 1-10 on you're Lesson Outline. December 03, 2015 Day 3: So Let's Review? * What is friction? A force that opposes the motion of one object moving past another. * What is Newton's 1st Law of Motion? Objects at rest remain at rest and objects moving at a steady rate stay that way until a force acts on them. * What is force? A push or a pull that acts on an object. December 03, 2015 So Let's See Inertia at Work? Domino Challenge Lab Sheet Experiment *Follow the Directions and complete the Domino Challenge Lab Sheet Watch this after the Experiment as a Review: December 03, 2015 Day 4: How do you know when you're moving? You know that you are moving because you are changing position.Position is the location of an object. The position of any object on a map is a comparison of the object's location to the things around it. We can look at an objects motion by looking at the objects change in position. The position can be measured as the distance an object has traveled from it's original starting spot. What is Speed? Speed: How fast an objects position is changing with time at any moment. Speed can be found by dividing the distance an object traveled by it's travel time. December 03, 2015 Speed * Cut out and glue into science notebook. Glue This Side Down S *MARK OUT THE V and WRITE "S" *Inside write the formula. December 03, 2015 What is Velocity? Velocity: The speed of a moving object taken with it's direction of travel. So in order to determine an objects velocity you need to know 2 things. 1. The speed of the object 2. The direction in which the object is traveling Objects can have the same speed but have different velocities. Objects can travel in the same direction but have different velocities.The only way two objects can have the same velocity is if they are going the same speed and the same direction. December 03, 2015 What is Acceleration? Newton's 1st law states that an objects velocity will not change unless a force is applied to it. So what happens if a force is applied? How could a force affect the velocity of a moving object? A force can change an objects speed, direction, or both which would cause a change in velocity. A change in velocity is calledacceleration. A special kind of acceleration is called deceleration.Decelerationoccurs when a force causes the speed of an object to decrease. Decceleration Acceleration December 03, 2015 Is Friction the only Force? Friction is one type of force the other force that can affect and object's on Earth is gravity. Gravity is an attraction between the mass of Earth and the mass of the object. Gravity is also what keeps Earth moving in a circular path around the sun. Let's Watch this as a Review: December 03, 2015 So Let's Review? * What is Acceleration? * How do you determine an objects velocity? * What is speed? Directions: Complete questions 11-19 on you're Lesson Outline.
