Speed Racer
This is the distance traveled over time
What is speed?
Sketch a position v. time graph that shows an object traveling at a constant velocity.
Single continuous line that doesn't change angles or directions
This is the total path traveled.
What is distance?
Change in the position of an object, over elapsed time
What is velocity?
Sam takes a trip to the bathroom, which is 60 meters away. It takes her 6 minutes to get there and return. What is her average speed?
10 m/min or 0.17 m/s
How fast you are going plus your direction.
What is velocity?
This part of a position v. time graph represents the velocity.
What is the slope?
Distance can only be positive it is therefore this type of quantity.
What is scalar?
Moving in these two directions result in a negative velocity
left and down OR west and south
A car travels at 30 miles per hour. How far will it travel in 5 hours?
150 miles
What is the average speed of a cow that walks east 60 meters in 90 seconds?
0.7 m/s
Sketch a position vs time graph of a person running at a constant, fast pace to the store, resting, and then walking back home at the same constant, fast pace.
Steep slope upwards, flat rest then equal steepness slope down
This is a change in position, or how far you are from the starting point.
What is displacement?
Ahlaya cycles at an average speed of 8km/h. How far has she traveled if she cycles for 4 hours?
32 km
A man walks 10 meters east and then, 5 meters west. What was his displacement?
5 meters east
This means that an object traveled equal distance in equal time.
What is constant speed?
Draw a position vs time graph for a person who walks at a slow, constant pace toward home, then stops, then runs at a faster constant pace toward home.
will vary
It takes Vic 3 minutes to walk 150 m from math to science class. When she gets there she realizes that she left her phone in math, and runs back to her math classroom at a speed of 2 m/s. What is Vic's average velocity?
zero
Find the velocity of a plane that traveled 3000 miles west in 5 hours.
600 mph west
A sprinter running at 9 m/s is chasing a long distance runner who runs at 7 m/s. The long distance runner starts 200 m ahead. The sprinter, however, can only run for 2 min without stopping. Does the sprinter catch the distance runner?
Yes.
Sprinter runs 1080 m
Distance runner is 1040 m
What is the speed of an object moving east for 6 seconds at 105.3 m/s?
105.3 m/s
The moon orbits the Earth in 28 days. Assuming it has a constant speed, does the moon also have a constant velocity?
No, it has a constant speed but it changes direction
An object changes its position by 50 meters, traveling at a speed of 15 meters every second. How much time has passed?
3.3 seconds
An object travels 100 m North then 50 m South. What total distance did it travel? What is its displacement?
distance = 150 m
displacement = 50 m north
The total of all of the slopes on a position vs. time graph
What is the average velocity