1 / 9

Kinematics

Kinematics. Day 3. Kinematic Equations. Used in situations with uniform acceleration. Kinematic Equations - Ex #1. A car traveling with an initial velocity of 6 m/s, accelerates at 2 m/s 2 , for 6 seconds. What is the car’s final velocity?. Kinematic Equations - Ex #1 - Ans.

shakti
Download Presentation

Kinematics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Kinematics Day 3

  2. Kinematic Equations Used in situations with uniform acceleration

  3. Kinematic Equations - Ex #1 A car traveling with an initial velocity of 6 m/s, accelerates at 2 m/s2, for 6 seconds. What is the car’s final velocity?

  4. Kinematic Equations - Ex #1 - Ans A car traveling with an initial velocity of 6 m/s, accelerates at 2 m/s2, for 6 seconds. What is the car’s final velocity?

  5. Sample Problems 2. You’re riding a unicorn at 25 m/s and come to a uniform stop at a red light 20 m away. What’s your acceleration?A: -15.6m/s2

  6. Practice Problems 3. With an average acceleration of -1.2 m/s2, how long will it take a cyclist to bring a bicycle with an initial speed of 6.5 m/s to a complete stop? • A: 5.4 s

  7. Practice Problems 4. Suppose a treadmill has an average acceleration of 4.7 × 103 m/s2. a. How much does its speed change after 5.0 min? b. If the treadmill’s initial speed is 1.7 m/s, what will its final speed be? 1.4 × 106m/s and 3.1 m/s

  8. Practice Problems 4. A dune buggy accelerates uniformly at 1.5 m/s2 from rest to 22 m/s. Then the brakes are applied and it stops 2.5 s later. Find the total distance traveled. A: 188.8m

  9. Small Group Questions • If a baseball has zero velocity at some instant, is the acceleration of the baseball necessarily zero at that instant? • If a passenger train is traveling on a straight track with a negative velocity and a positive acceleration, is it speeding up or slowing down? • When you are out for a bike ride, you slow down on your bike as you approach a group of hikers on a trail. Explain how your acceleration can be positive even though your speed is decreasing.

More Related