🏎️ Fast & the Curious
What is the formula used to calculate speed?
S = D/T
Which term describes the total path an object travels
Distance
On a distance–time graph, what does the slope represent?
The speed of the object
What term describes an object changing position over time?
Velocity
What is a reference point used for?
To describe the location or motion of an object
A runner travels 100 meters in 20 seconds. What is their speed?
5 m/s
A dog runs around a yard in a big loop and ends where it started. What is the dog’s displacement?
0
What does a flat (horizontal) line on a distance–time graph mean?
The object is not moving
What do we call the object or place used to determine if motion is happening?
Reference Point
What kind of force is it when a car brakes very hard?
Friction Force
What is the main difference between speed and velocity?
Velocity includes direction
A student walks 5 m east and then 5 m west. What is the displacement?
0 m
If a line on a distance–time graph is very steep, what does that tell you about the object’s speed?
The object is moving fast
Is velocity a vector or scalar quantity
Vector because it includes an amount and a direction
Which has more speed: a car going 30 km/hr or a bike going 30 mph?
the 30 mph bike because a mile is farther than a kilometer
A bike moves 10 m/s east for 2.5 seconds, then turns and moves 12 m/s North for 3 seconds. What is the bike’s total distance traveled
61 m
A student walks 10 m north, then 6 m east. What is the distance and displacement of the student?
*If there is a decimal, round to the nearest tenth*
Distance 16 m
Displacement: 11.7m
Using the data points below from a distance vs time graph, what would the speed of the object be from time 5s to time 7s?
Time: 0,1,2,3,4,5,6,7
Distance:0,2,5,9,14,20,27,35
7.5 m/s
What term describes the rate at which distance changes over time?
Speed
If you are to ignore air resistance and you from a bowling ball and a feather from a roof, which will hit the ground first and why?
they will land at the same time because gravity act on all objects the same.
A car travels 60 km north in 1 hour, then 60 km east in 1 hour. What is the car’s average velocity?
Hint: Pythagorean
42 km/hr NE
A hiker walks 3 km north, 4 km east, 3 km south, then 5 km east. What is the total distance and the displacement?
Distance: 15 km
Displacement: 9 km east
What does it mean if two lines on a distance–time graph cross each other?
It means two object are at the same point
What is the term used to describe an object that includes both an amount and a direction
Vector
If you drop a ball at your side while riding in a smoothly moving bus, where does the ball land relative to you—and why?
It will land at your side as the ball will continue to move as its already in motion.