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Chapter 3, Lesson 2 (Speed)
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What is the average speed if a car traveled 200 miles in 4 hours?
200 miles divided by 4 hours = 50 mph
What is the average speed of a car traveling from New Orleans to Pensacola, Fl if the car traveled 400 miles in 5 hours?
400 miles divided by 5 hours = 80 miles per hour
A train is traveling 10 miles in 2 hours. What is speed the train is traveling?
10 miles divided by 2 hours = 5 miles per hour (mph)
Owen rides his bike for 15 miles in 1 hour. What speed is he traveling?
15 mph
If you bike 12 miles in one hour, and you bike for 1 hour. How far have you biked?
12 miles
If you walk 3 miles per hour and you walk for 2 hours, how far have you walked?
6 miles
If you walk 2 miles per hour and you walk for 1 hour. How far have you traveled?
2 miles
15 mph south is an example of ___________
Velocity
Velocity = ________ + _________
speed plus direction
What are three types of acceleration
Starting, speeding up, slowing down
What is any change in speed or direction of an object's motion?
Acceleration
What combines both speed and direction an object is moving?
Velocity
We drive to the beach. It is 50 miles away. It takes us 5 hours to get there. What is our average speed? Include your units!
50 miles divided by 5 hours = 10 miles per hour
Think of an example how objects move at different speeds at different times
Riding a bike - sometimes fast, sometimes slow Driving a car - sometimes zoom, sometimes slow Disney World Ride - sometimes fast, sometimes slow
True or False: The speed of most objects is constant
False. The speed is not constant usually. In other words, objects usually do not move at the same speed all the time.
How do you find an object's average speed?
Divide the distance the object moves by the total time spent moving
True or False: You find the average speed by multiplying the distance traveled by the total time moving?
False. You divide the distance by the time spent moving
Speed is the _________ at which an object changes _________
Speed is the RATE at which an object changes POSITION
True or False: Objects move at different speeds
True