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The basic four equations for physics

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1 The basic four equations for physics
Fantastic Four The basic four equations for physics

2 The Fantastic Four Equations for all uniform acceleration
d= displacement(m) or distance a = acceleration(m/s2) t= time(secs) Vf = final velocity(m/s) Vi = initial velocity(m/s) vf = vi + at d = vit + ½ at2 vf2 = vi2 +2ad d= ½ (vf + vi)t

3 wtf W = What are they asking for?? T = Tell me what you know!!
F = Find the Formula solve the problem

4 Ex: If a car travels with a velocity of 2. 0m/s at a rate of +4
Ex: If a car travels with a velocity of 2.0m/s at a rate of m/s2 for 2.5 secs. What is the final velocity? vf = vi + at

5 Ex: A car starting from rest accelerates at +6. 1m/s2 for 7. 0 secs
Ex: A car starting from rest accelerates at +6.1m/s2 for 7.0 secs. How far does this car move? d = vi t + ½ at2

6 EX: An airplane must reach a velocity of 7. 0m/s for takeoff
EX: An airplane must reach a velocity of 7.0m/s for takeoff. If the runway is 1.00km long, what is the plane’s acceleration? vf 2 = vi2 + 2ad

7 Ex: What is the displacement of a train as it accelerates from 11m/s to 33m/s in .333 minutes?
d = ½(vf + vi)t

8 Free Fall problems When air resistance is ignored all objects fall at the ___________acceleration yAfk D1Ig The acceleration due to gravity is _________. Why is it negative? Since it is moving at a constant or ________acceleration__________

9 Things to Remember when working Free Fall Problems!!
The d is always a __________value. Why? Vf is always a _________value. Why? So, when use vf2 = vi2 + 2ad and you determine vf it will a always be_________ in a free fall problem.


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