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 )