1. That is constant motion to you and me.
LINEAR MOTION
That is constant motion to you and me.

2. I. VECTORS AND SCALARS
A scalar is a quantity that has just a magnitude.
Usually just a number.
NO direction.
Ex.
15 sec
2.0 kg

3. I. VECTORS AND SCALARS
A vector is a quantity that has a magnitude and a direction.
It is a number and a direction (E, N, W, S, up, down, left, right……)
Ex:
4.0 m South
25 mph North
We use arrows to represent vectors.
Position (x)
Current location

4. II. DISTANCE VS. DISPLACEMENT
Distance is a SCALAR.
It is the total length travelled. Symbol (d)
Ex:
I ran 2.2 miles
Displacement is a VECTOR. Symbol (∆d, or Δx)
It is the displacement of an object from the original position.
You run a lap on the track. Your distance is ¼ mile, but your displacement is 0 miles
Must have a direction.

5. II. DISTANCE VS. DISPLACEMENT
Example:
A student goes to lunch and he walks 20 m East then turns and goes 80 m North. He pauses and turns and goes 10 m West.
What is his distance?
What is his displacement?
10 m W ∆d
80 m N
20 m E

6. III. SPEED AND VELOCITY Speed is a scalar. Velocity is a vector.
No direction
S = d/t
Measured in m/s
It is the total distance divided by the time.
Velocity is a vector.
Must have direction
v = ∆d/t, or Δx/t
It is the displacement divided by the time.

7. III. SPEED AND VELOCITY HERE IS A HINT, DRAW A PICTURE! Example:
A teacher walks 10 m South, forgets something and goes back 10 m North. She then goes 10 m South and turns West and goes 40 m. Then she turns and goes 25 m North to make copies. If it took her 45 seconds to do this trip, find:
Distance
Displacement
Speed
Velocity
HERE IS A HINT, DRAW A PICTURE!