Motion
Define: Position
The location of a place or an object
Define: Speed
Speed is a measure of how fast something moves, or the distance it moves in a given amount of time.
If you travel 60 miles in 2 hours, what is your average speed?
30 miles /hour
or
30 mph
If a car is moving backwards, can it’s speed be measured?
Yes, because the car travels a distance in an amount of time.
Define: Motion
A change in an object's position over time.
What are the two things we need to know to calculate speed?
Distance and time
A student runs 100 meters in 20 seconds. What is the student's average speed?
S= 5 meters/sec
or
S= 5 m/s
Scientists discover an asteroid that is moving through space. What information is needed to determine the average speed of the asteroid?
How far the asteroid has moved in 24hrs
Describe how your position changes as you jump over an object.
Your position changes vertically and horizontally. You jump up and also to the side.
Write the speed equation.
S= d/t
You travel 500 meters in 25 minutes. What is your average speed?
S= 20 meters/min
or
S= 20 m/min
A runner measured the time it took him to run 5 k.m. What can he calculate from the distance and time measurements?
Speed
If you are riding in a car going 50mph, are you in motion? If so, how fast are you moving?
yes, 50 mph
Two students run the 50 yard dash in PE. Student A runs the 50 yard dash in 6.1 seconds, and Student B runs it in 7.2 seconds, which student is faster?
Student A ran faster.
A cat walks 300 meters in 15 minutes. What is the cat's average speed?
20 meters/minute
or
20 m/min
A bowling ball moves across a flat surface at 7 feet per second. If a student is asked to calculate the total distance traveled by the ball, what other information does the student need to know?
Total time the ball rolled.
If you sit on a moving bus and toss a quarter in the air, where will it land?
It will land in your hand.
Kilometers is a measure of _________.
Seconds is a measure of _______.
Answers must be in correct order.
Distance
Time
If a bus travels 80 miles in 120 minutes, what is the bus's average speed in miles per hour?
Hint: make sure your units are correct.
S= 40 miles/hour
or
S= 40 mph
A girl walked for 30 minutes. She noticed that she traveled farther in the first 15 minutes of her walk than in the second 15 minutes. What can she conclude about her walk?
Her average speed was faster during the first half of her walk.