2. Today’s Objective
We will be able to calculate the speed and velocity of an object in motion by analyzing given data.

3. SPEED
DEFINITION
Speed measures how quickly an object moves a distance.
Speed is equal to the distance the object travels divided by the time it took the object to travel that distance.
Speed is always written as units of distance (like meters) over units of time (like seconds)

4. SPEED
EQUATION
Speed = distance ÷ time OR
S = D T

5. SPEED
EXAMPLE
A car travels 50 miles in 2 hours. What is its average speed?
Speed = distance ÷ time
Speed = ?_ Distance = 50 miles Time= 2 hours
Set up the Equation: Speed = 50 miles (divide)
2 hours
Divide and solve: Speed = 25 miles in 1 hour
The average speed is 25 miles per hour

6. GP 1
A car travels 300 miles to the beach and gets there in 6 hours. On average, how fast was the car traveling on the trip?

7. GP 2
A ball is thrown 30 meters in 10 seconds. How fast was the ball traveling?

8. VELOCITY
DEFINITION
Velocity is how fast something moves in a certain DIRECTION.
It is calculated the same way as speed, but you need to add the direction that the object is traveling to your answer.

9. Velocity
EQUATION
V = D (and add a direction) T

10. SPEED
EXAMPLE
A car travels 30 miles in 2 hours going East. What is its velocity?

11. GP 3
A plane takes off from Boston and travels miles across the country to San Francisco, California in 6 hours. What is the velocity of the plane?

12. GP 4
Two boys are running in opposite directions at 4 m/s. Explain your answers
Do they have the same speed?
Do they have the same velocity?

13. GP 5
1. Calculate the speed of a dog running through a field if he is covering meters in 10 seconds.
a. Do I need to include direction? ________

14. DFA
2. If a cross country runner covers a distance of 300 meters in 15 seconds what is her speed?
a. Do I need to include direction? ________

15. EXTENSION WORK AT HALF-LEVEL VOICES
RAISE YOUR HAND IF YOU HAVE A QUESTION
GET A 100%!!!