solving for objects in free fall using the math physics
TRANSCRIPT
Let’s look at some equations
d = vot + (1/2)gt2
vf 2= vo2 + 2gd
vf = vo + gt
Questions
How do we calculate when an object is in free fall?
FactsWe use three equations when an object is in free fall
Symbol Meaning Unit(s)
d
Distance/displacement
m
vo Initial velocity m/s
t time
s
g
gravity
10m/s2
d = vot + (1/2)gt2
vf 2= vo2 + 2gd Symbol Meaning Unit(s)
vf
Final velocity
m/s
vo Initial velocity m/s
d Distance/displacment
m
g
gravity
10m/s2
Be sure to take the square root to solve for final velocity
vf = vo + gt
Symbol Meaning Unit(s)
vf
Final velocity
m/s
vo Initial velocity m/s
t time
s
g
gravity
10m/s2
Understanding the equations
QuestionsWhen an object is at rest before it falls, what is the initial velocity (vo)?
Facts
Zero
Free Fall vs. Other Equations
QuestionsWhy can’t we use v = d/t or a = v/t for free falling objects?
FactsBecause neither
equation takes gravity into consideration
Understanding the equations
QuestionsWhat do all the free fall equations have that confirms that something is falling?
Facts
Gravity
Free Fall vs. Other Equations
QuestionsWhy can’t we use v = d/t or a = v/t for free falling objects?
FactsBecause neither
equation takes gravity into consideration
Understanding the equations
QuestionsHow do the free fall equations support that mass, weight, shape, etc. do not impact something as it in free fall?
Facts
Mass, weight, volume, etc are not included in the equations