PPT-Acceleration Review A skater increases her velocity from 2.0 m/s to 10.0 m/s in 3.0 seconds.

27 ms 2 While traveling along a highway a driver slows from 24 ms to 15 ms in 12 seconds What is the automobiles acceleration Remember that a negative value indicates a slowing down or deceleration . Section 3.4a. The difference quotient:. When we let . h. approach 0, we saw the rate at which a function. w. as changing at a particular point . x. …. Definition: Instantaneous Rate of Change. The . What Is Motion?. Motion. is when an object changes place or position. To properly describe motion, you need to use the following:. Start and end position?. Movement relative to what?. How far did it go?. Kinematic Equations. St. John the Evangelist High School. Mr. Szopiak. Trashketball. Directions. DIRECTIONS. :. Split into 3 groups. For each problem, each team – and each team member - works together on the problem in their desks.. The pitcher throws. The ball speeds toward the batter. Off the bat it goes. It’s going, going, gone! A home run!. Before landing, the ball went through several changes in motion. It sped up in the pitcher’s hand, and lost speed as it traveled toward the batter. The ball stopped when it hit the bat, changed direction, sped up again, and eventually slowed down. Most examples of motion involve similar changes. In fact, rarely does any object’s motion stay the same for very long.. Rates of change. Example 1:. Find the rate of change of the Area of a circle with respect to its radius.. Evaluate. the rate of change of A at . r = 5. and . r = 10. .. If . r. is measured in inches and . Practice. Example 1. 1.) Georgia is jogging with a velocity of 4 m/s when she accelerates at 2 m/s. 2. for 3 seconds. How fast is Georgia running now?. Variable Information:. V. i. t. . a. . . 1.Superman is off to visit Lois Lane. He sees he’s late and increases his flying speed. I know he defies the laws of physics anyway, but let’s pretend, okay? If our lead-phobic super hero accelerates uniformly from 1200 m/s to 1600 m/s in 0.40 seconds, then what is his rate of acceleration? . 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.. Displacement: . Is the distance from where you start to where you finish. . Δ. d=. d. f. -d. i. Velocity:. How fast and in what direction (vector quantity). V = ∆d/t. Speed: . How fast (scalar quantity). 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 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. 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 . The ascent is a very dangerous and important phase of any space shuttle mission. This phase begins at liftoff and ends as the space shuttle reaches orbit. The main propulsion system (which consists of 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. .