Download presentation

Presentation is loading. Please wait.

1
Acceleration Ch. 10.2

2
Objectives Describe the concept of acceleration as a change in velocity. Explain why circular motion is continuous acceleration even when the speed does not change. Calculate acceleration as the rate at which velocity changes. Graph acceleration on a velocity-time graph.

3
**This Graph Shows Constant Velocity**

2. Constant Increasing No Velocity 1. 3. Answer Now 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

4
**This Graph Shows No Velocity**

1. Constant No Velocity Increasing 2. 3. Answer Now 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

5
**What is the distance a man can run in 1 hour if he runs at 7 mi/hr?**

7 km 7 m 7 mi Answer Now 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

6
**What is the Velocity of a Plane that Travels 500 mi in 1 hour**

500m/s 500 mi/hr 500 km/hr Answer Now 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

7
**Using the Conservation of Momentum if car has the momentum of 50 kg**

Using the Conservation of Momentum if car has the momentum of 50 kg*m/s and a man is in the moving car the man has? 50 m/s 50 kg 50 kg * m/s Answer Now 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

8
**final velocity – initial velocity**

Acceleration Acceleration = change in velocity divided by the time interval in which the change occurred. Acceleration = a = final velocity – initial velocity time vf – vi t

9
Units Acceleration = Vf – V i t Units = m or m s s * s

10
**Acceleration Acceleration = rate at which velocity changes over time**

Quick time movie acceleration Acceleration occurs when there's a change in Speed Direction Or both change

11
**Uniform circular motion is constant acceleration.**

QT Centripetal Acceleration Video of bucket and water having centripetal acceleration

12
**Acceleration Acceleration can be determined from a graph**

QT Graphical Representations of Accelerations

13
**Acceleration can also be determined from a velocity-time graph**

A straight line with slope = constant acceleration Slope of the line = acceleration

14
**Horizontal line = constant speed, no acceleration or deceleration.**

15
**Examine the following graph.**

16
**A negative slope indicates that an object is slowing down or decelerating.**

17
**Calculating Acceleration**

Acceleration is the rate at which velocity changes. Acceleration Equation (for straight-line motion) QT Distinguishing B/W Velocity and Acceleration QT Average Acceleration SI Units = m/s2

18
**The Top Thrill Dragster at Cedar Point goes from 0 m/s to 53**

The Top Thrill Dragster at Cedar Point goes from 0 m/s to 53.6 m/s (120 mph) in 4 seconds. What is its acceleration? Given: a = Vf = V i = t = Algebra: Substitution:

19
**A car traveling home at a velocity of 15**

A car traveling home at a velocity of 15.6 m/s slams on its brakes and comes to a stop to avoid a dog. If it takes 5 seconds to stop, what is the cars acceleration? Given: a = Vf = V i = t = Algebra: Substitution:

20
**In what direction is the car accelerating?**

How can you tell mathematically?

21
**A Porsche Boxster has an acceleration of 4. 51 m/s2**

A Porsche Boxster has an acceleration of 4.51 m/s2. If the car starts from rest how much time would it take for the vehicle to reach a speed of 11.3 m/s? Given: a = Vf = V i = t = Algebra: Substitution:

22
**A golf ball thrown from the top of the sears tower accelerates at 9**

A golf ball thrown from the top of the sears tower accelerates at 9.8 m/s2 toward the ground and lands on the pavement 9.2 seconds. If the ball’s final speed is 93.0 m/s what was the speed with which the ball was initial thrown? Algebra: Substitution: Given: a = Vf = V i = t =

Similar presentations

OK

Motion, Speed, and Velocity THE NEED FOR SPEED!!! dKDDrnx-Fgw.

Motion, Speed, and Velocity THE NEED FOR SPEED!!! dKDDrnx-Fgw.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google