Chapter 2 Section 2 Acceleration Motion with Constant

Chapter 2 Section 2 Acceleration Motion with Constant Acceleration • When velocity changes by the same amount during each time interval, acceleration is constant. • The relationships between displacement, time, velocity, and constant acceleration are expressed by equations. These equations apply to any object moving with constant acceleration. • These equations use the following symbols: Dx = displacement vi = initial velocity vf = final velocity t = time interval Chapter menu Resources Copyright © by Holt, Rinehart and Winston. All rights reserved.

Chapter 2 Section 2 Acceleration Equations for Constantly Accelerated Straight-Line Motion Chapter menu Resources Copyright © by Holt, Rinehart and Winston. All rights reserved.

Chapter 2 Section 2 Acceleration Sample Problem Final Velocity After Any Displacement A person pushing a stroller starts from rest, uniformly accelerating at a rate of 0. 500 m/s 2. What is the velocity of the stroller after it has traveled 4. 75 m? Chapter menu Resources Copyright © by Holt, Rinehart and Winston. All rights reserved.

Sample problems: • A car accelerates uniformly from rest to a speed of 6. 6 m/s in 6. 5 seconds. Find the distance the car travels during this time. • A car with an initial speed of 6. 5 m/s accelerates at a uniform rate of 0. 92 m/s/s for 3. 6 s. Find the final speed and the displacement of the car during this time. • An aircraft has a liftoff speed of 33. m/s. What minimum constant acceleration does this require if the aircraft is to be airborne after a take-off run of 240. m. Chapter menu Resources Copyright © by Holt, Rinehart and Winston. All rights reserved.

Chapter 2 Section 2 Acceleration Practice Problems • Pg 53 #2, 4 • Pg 55 #3, 4 • Pg 58 #2, 3, 6 Chapter menu Resources Copyright © by Holt, Rinehart and Winston. All rights reserved.