Chapter 3

Question 1

How do you find displacement with vectors?
How do you find average velocity?
How do you find average acceleration?

Answer 1

Δr(->)=rf(->) - ri(->)

In meters (add vectors)

Vav(->)= Δr(->) / Δt

In meters per second

aav(->)= Δv(->) / Δt

In meters per second squared

Question 2

How do you solve projectile questions?

Answer 2

Treat x and y as two independent motions of eachother
X has acceleration of gravity on it
Use four constant velocity equations except with x and y individually

Question 3

What is the equation for finding the x component of a force or velocity at an angle?

Answer 3

Vx=VoCosθ

Fx= FCosθ

Question 4

What is the equation for finding the y component of a force or velocity at an angle?

Answer 4

Vy=VoSinθ

Fy=FSinθ

Question 5

How do you find the angle of a projectile once you have Vx and Vy?

Answer 5

Tanθ= (Vy/Vx)

θ=tan^-1 (Vy/Vx)

Question 6

Do projectile questions on page 64-69

Answer 6

Ok

Question 7

Do one dimensional and two dimensional vector questions on sept 24 slides and beginning of sept 26

Answer 7

Okay