advertisement

Vertical 1D Motion Problem BELLWORK!! On the Moon ON THE MOON is thrown upward with velocity • A Moon rock 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? 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? Given Information • vo = + 7 m/s ( or upwards ) • vf = -4 m/s ( or downwards ) • Time interval of 7 sec ( t = 7 s ) Part A - Choose Appropriate Formula Part A - Choose Appropriate Formula Part A - Choose Appropriate Formula Part A – Substitute Values Part A – Substitute Values 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? 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 Part B – Appropriate Formula Part B – Substitute Values Part B – Solve Part B – Solve Part B – Without Sig Figs? Exam Prep Book • Pg 24 ( 1 -5 ) • Pg 25 – 1 ( graph ) • Pg 30 ( #1 ) • Pg 31 ( 2-5 & 1-2 at bottom )