Review 

Click on the button and play ... 

One of these things
is not like the other!

 
 

The idea for this game and graphic come from a great high school physics teacher named Kelly O'Shea.

 

 

 

Try this at home!

"30 Seconds with Mr. G" - Number 4

Mindpaint Channel

IV. Motion Equations for Problem Solving

 

 

When an object is moving at a constant acceleration we can use the following equations to find motion information

 

 

 

A. Constant Accel. Equations
        
(see Reference Table)

 

 

1. Average Velocity

 

 

V = (Vi + Vf)/2

or

V = Δd/Δt

 

 

 

 

 

2. Acceleration:

 

 

a = (Vf - Vi)/t

 

 

Cross multiply & Solve 

 

at = (Vf - Vi)

 

Add Vi to both sides

 

Vf = Vi + at

 

 

3. Displacement:

 

 

V = Δd/Δt

 

 

 

 

 

 

B. Additional Equations

 

 

Take Equation 3 and solve for d

 

 

 

Δd = V Δt

 

 

 

 

 

 

• Substitute Equation 1 into previous equation

 

 

Δd =[(Vi + Vf)/2]Δt 

 

 

 

Since Vf = Vi + at

 

 

 

Δd =[(Vi + (Vi + at)/2]Δt

Gather like terms and solve for d

 

Δd =Vit +1/2at2

 

 

 

Word Problems

 

 

 

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