PPT-Chapter 3 3.1 What is acceleration?

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. Newton’s Second Law of Motion. A motorcycle undergoes acceleration when . a.. . S. F. = 0.. b. a nonzero net force acts on it.. c. it is in equilibrium.. d. All of these.. A motorcycle undergoes acceleration when . 3. Applications of Newton’s Laws in 1 dimension. Free Fall. Motion in a Fluid. Spring motion. Molecular Dynamics. Free fall. Acceleration = g = 9.8 m/s. 2. = constant. Constant acceleration implies constant force = weight. A. ccelerated . M. otion. 3.1 Acceleration. Acceleration. Acceleration – the rate at which an object’s . ____________________________. EX: 9.8 m/s/s = 9.8 m/s. 2. Acceleration . Acceleration. Vector - . Learning in . the fast lane. Today’s. Learning Targets. Transform standards into clear learning goals that are explicit to students.. Implement high-impact instructional strategies to foster academic achievement in . Speed, Velocity and Acceleration. Observing Motion. Motion. : An object’s change in position relative to a reference point. Frame of reference. : system for specifying the precise location of objects in space and time. . Chapter Goal: To extend the description of motion in one dimension to include changes in velocity. This type of motion is called . acceleration. .. © 2015 Pearson Education, Inc. . Chapter 3: Acceleration. ACT/PSAE practice. Intro to acceleration. What does it mean in common language?. What does it mean to a physicist? (That’s you!). First equation of acceleration. A = v/t. Standard unit for acceleration: m/s^2. 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 5.0 s before actually reaching the stop. The speed changes from 9.0 m/s to 0 m/s over time.. Today: Finish Chapter 3 Chap 4 - Newton’s Second Law In Chapter 4, we establish a relationship between force (chap 2) and acceleration (chap. 3). Reminder: http:// www.hunter.cuny.edu/physics/courses/physics100/fall-2016 Acceleration is a change in velocity. Speed or direction. Centripetal Acceleration. Acceleration can mean a change in direction, not just speed. Centripetal acceleration. Acceleration that occurs in a circular motion. 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 . 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.