1. Vertical 1D Motion Problem

2. On the Moon A Moon rock ON THE MOON is thrown upward with velocity of 7 m/s. After 7 s, it has a downward velocity of 4 m/s. What is the acceleration due to gravity on the Moon? How high above the starting point did the rock go before it began to fall?

3. On the Moon A Moon rock is thrown upward with velocity of 7 m/s. After 7 s, it has a downward velocity of 4 m/s. What is the acceleration due to gravity on the Moon? How high above the starting point did the rock go before it began to fall?

4. Given Information v o = + 7 m/s ( or upwards ) v f = -4 m/s ( or downwards ) Time interval of 7 sec ( t = 7 s )

5. Part A - Choose Appropriate Formula

6. Part A - Choose Appropriate Formula

7. Part A - Choose Appropriate Formula

8. Part A – Substitute Values

9. Part A – Substitute Values

10. Part B – Appropriate Formula NOW HAVE ADDITIONAL INFO ( value for g ) What are you asked to find? – Height of rock ( above initial position ) before rock falls Any more info from this?

11. Part B – Appropriate Formula NOW HAVE ADDITIONAL INFO ( value for g ) What are you asked to find? – Height of rock ( above initial position ) before rock falls Any more info from this? – Final velocity at top of path is zero

12. Part B – Appropriate Formula

13. Part B – Substitute Values

14. Part B – Solve

15. Part B – Solve This value should actually be 1.57 m/s 2 since you do not want to round—IN ANY PROBLEM, EVEN IF YOU ARE USING THE ANSWER FROM A PREVIOUS ONE— UNTIL THE VERY END

16. Part B – Without Sig Figs?

17. Exam Prep Book Pg 24 ( 1 -5 ) Pg 25 – 1 ( graph ) Pg 30 ( #1 ) Pg 31 ( 2-5 & 1-2 at bottom )