Show:
Definitions
Scalar vs. Vector
Velocity
Acceleration
100

a. Define scalar quantity.

b. Define vector quantity.

a. Scalar: number

b. Vector: number and direction

100

Is volume scalar or vector?

Scalar

100

Calculate velocity:

A puppy runs 20 meters east in 60 seconds.

0.33 m/s east

100

What is acceleration?

Change in velocity over time. (speeding up or slowing down)

200

What is the difference between distance and displacement?

a. Distance: total length traveled

b. Displacement: length between initial and final positions

200

Distance is ________.

Displacement is __________.

Distance is SCALAR.

Displacement is VECTOR.

200

Calculate velocity:

A car is driven 7 m backwards in 35 seconds.

- 0.2 m/s

200

Calculate acceleration:

V1: 3 m/s

V2: 17 m/s

t: 25 sec

0.56 m/s/s

300

What are the four types of motion?

1. stopped

2. constant

3. speeding up (acceleration)

4. slowing down (deceleration)

300
What is the difference between SPEED and VELOCITY? (Explain!)

Speed is a SCALAR quantity and velocity is a VECTOR quantity. 

Speed is a number and velocity is a number with direction.

300

Calculate distance:

A person runs 10 mi/hr for 1.5 hours.

15 miles

300

A velocity vs. time graph has the following coordinates: (0 s, 85 m/s) and (70 s, 10 m/s)

Calculate acceleration.

-1.07 m/s

400

What is an example unit for...

a. distance

b. time

c. velocity

d. acceleration

a. meters, cm, feet, miles, km

b. sec, min, hr, days, weeks, months, years

c. m/s, mi/hr, km/min

d. m/s/s, m/hr/s, mi/min/s

400

Write 2 examples of scalar quantities and 2 examples of vector quantities.

Scalar: volume, mass, distance, weight, area, length, speed

Vector: displacement, force, velocity, acceleration

400

A position vs. time graph has the following coordinates: (0 min, 0 km) and (20 min, 550 km). 

Calculate velocity. 

27.5 km/min

400

Calculate the change in velocity.

a= -2.5 cm/sec

t= 30 sec

- 75 cm/sec

500

a. What did we measure in the car lab?

b. What did we discover from the graph?


a. position change over time

b. slope = velocity of the car

500

Acceleration is ________ because _________.

Acceleration is VECTOR because it is change in velocity over time, and velocity is a VECTOR quantity. 

500

Calculate time:

A marble rolls 95 cm at 12 cm/sec.

7.92 seconds

500

Calculate final velocity.

a = 3 miles/min^2

V0 = 2 miles/min

t = 10 min

Vf = 32 miles/min