PPT-Lesson 2.2 Acceleration Essential Question: How do you calculate the acceleration of

Describe the speedometer on a car that is entering a highway drives for 25 miles and then exits the highway Consider the two situations below When a shuttle bus approaches a stop the driver begins to apply the brakes to slow down 50 s before actually reaching the stop The speed changes from 90 ms to 0 ms over time. and . Centripetal Force. Acceleration. Speeding up. Slowing down. Changing direction. . Think of spinning an object on the end of a string. How would you describe it to someone?. The easiest thing to say is that it moves in the shape of a circle.. Class . 5. Today, Chapter . 2, Sections 2.5 to 2.7. Freefall. Acceleration due to gravity. Motion on an inclined plane. Differentiating velocity to get acceleration. Integrating acceleration to get velocity. When a Falling Object Accelerates Only Due to Gravity, We Call This…. . Free Fall. Knowing What We Know Now. Why does a brick with twice the amount of mass as another brick not fall twice as fast? . Coach Dave Edinger. J. C. Booth Middle School. Physical Science (8A). . Mrs. Coach Ed. R-O-C-K-S !!!. Newton’s 1st law REVIEW. Summarize what the law states.. What does an object at rest need for it to move?. Motion. Lesson 15. February 8. th. , 2011. Newton’s Second Law of Motion. If the external force on an object is not zero, the objet accelerates in the direction of the net fore. The magnitude of the acceleration is directly proportional to the net force and inversely proportional to the objects mass. . Galileo defined acceleration as the rate of change of velocity.. Formula!. a. = . Δ. v / t. Things that affect acceleration: . Speeding up. Slowing down. Changing direction. Time. Free Fall. When air resistance does not affect the motion of an object, then the object is in free fall.. Velocity and acceleration Measuring an objects motion speed Speed is calculated by dividing distance by time S = d/t 5.0 km/h 2.5 m/s 45 mph velocity Velocity is the same as speed, but you tell the direction of motion in the answer. Acceleration is a measure of . the change in velocity per unit of time. When the velocity of an object is changing, it is . accelerating. Negative acceleration: . slowing down. Positive acceleration: . V. ector quantity: . magnitude (value) & direction. R. ate . at which an object changes its velocity. . “. How fast an object is getting faster”. If the velocity of an object is changing, it is accelerating!. What is acceleration?. If you’re traveling in a car at a constant speed of 50 mph, are you accelerating?. No, you’re not. . Acceleration is the rate of change of velocity. . Acceleration. In order for acceleration to occur, velocity MUST be . Experiencing Gravity’s Effects. Review: Symbols and Language. Symbol. Stands. For. Meaning. F. g. Gravitational Force. This is the magnitude. of the gravitational force on an object, which can also refer to the weight of an object.. 3.2. 3.2 Acceleration. Think about a car at a stop light. When the light turns green, the car starts moving and the car’s velocity increased. The car began accelerating. Acceleration is the change in velocity divided by the time it took the change to occur. Get an . Ipad. , from my website click on Acceleration web notes on today’s calendar. Answer the following questions: . What . is acceleration?. Why is acceleration a vector quantity?. What does a position vs. time graph look like when showing changing velocity?. Defination. In non-uniform motion,the velocity of a body changes with time . For example, when a train leaves or approaches the platform its velocity changes with time. The change in velocity of an object with time is given by a physical quantity known as acceleration. .