1. Acceleration and Gravity Chapter 4.4, Physics 2

2. Representing 1D motion Motion horizontally Motion vertically

3. Acceleration, speeds up A car is stopped at a red light. When the light turns green, the car speeds up to 80 m/s in 5 s. What is the acceleration of the car?

4. Acceleration, speeds up What is the acceleration of a train that travels from 100m/s to 120m/s in 10s?

5. Acceleration, speeds up A boat accelerates at a rate of 6.0 m/s 2 down the river. How much time will it take the boat to speed up to 70 m/s?

6. Acceleration, Slows down Carlos throws a boomerang into the air with an initial velocity of 5 m/s. The boomerang takes 5 s to reach a velocity of 3 m/s. What is the boomerang’s acceleration?

7. Acceleration, gravity A gorilla falls out of the tree with an acceleration of 25 m/s 2. If she hits the ground in 5 s, what is the poor gorilla’s change in velocity?

8. Acceleration, gravity An apple falls from a tree and reaches the ground in 4seconds with a velocity of 40m/s. What is the acceleration?

9. Velocity and Acceleration If or v = at v = gtg = -10m/s^2

10. Position equation A race car accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the acceleration of the car and the distance traveled. Problem 4: http://www.physicsclassroom.com/class/1DKin/Lesson- 6/Sample-Problems-and-Solutions

11. Gravity Distance = (1/2)(acceleration)(time) 2 d = (1/2)at 2

12. Position equation A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s^2. Determine the time for the feather to fall to the surface of the moon. Problem 5: http://www.physicsclassroom.com/class/1DKin/Lesson-6/Sample- Problems-and-Solutionshttp://www.physicsclassroom.com/class/1DKin/Lesson-6/Sample- Problems-and-Solutions