Vocabulary
What is the entire length of an object’s path?
Distance
What is the formula for speed?
Speed = Distance / Time
What is the formula for velocity?
Velocity = Displacement / Time
What is the Y and X axis for a distance-time graph?
X axis = Time
Y axis = Distance
What is the difference between speed and velocity?
Speed is a scalar quantity and velocity is a vector quantity (magnitude and DIRECTION)
What is the name of a starting point you choose to describe the location, or position, of an object?
Reference Point
You travel 2 km, stop to rest, and then walk an additional 3 km. It takes you 1 h to travel the distance. What was your average speed?
5 km/h
What is the difference between distance and displacement?
Distance is scalar and displacement is a vector
Which car is has a greater speed?
Car B
Distance and displacement can be equal. True or False.
True
What is a measure of the distance an object travels in a given amount of time?
Speed
A jet airliner flies 4,100 km from New York City to San Francisco in 4.25 h. What is its average speed?
964.7 km/h
The library is 1.0 km from a student's house. It takes 0.4 h to walk to the library and then back home. What is the student's average velocity in kilometers per hour (km/h)?
0 km/h
What is the average speed for line C?
15 km/h
The slope of a distance-time graph indicates an object's ___________.
Speed
What is a quantity that has both magnitude and direction?
Vector
To get to school, a student walks east down one street for exactly 4 km and then turns left, heading north for 3 km. If the student takes 40 minutes to get to school, what is their average speed?
10.5 km/h
An object is travelling a distance of 3 meters every second along a curved path. Which of the following statements about the object’s motion is TRUE?
A. The speed and the velocity of the object are constant.
B. The speed of the object is constant but its velocity is changing.
C. The speed of the object is changing but its velocity is constant.
D. The speed and the velocity of the object are changing continuously.
B. The speed of the object is constant but its velocity is changing.
Which answer choice best describes the movement of the object between the times of 0 and 6 seconds on a graph?
A. Moving at a constant speed
A peregrine falcon (Falco peregrinus) takes off from a cliff. It flies 300 meters north to search for prey. It then turns and flies 400 meters east before landing on a tree. The entire flight takes 50 seconds.
Speed = 14 km/hr
Velocity = 10 m/s northeast
What is the vocabulary word for the process of changing position?
Motion
What is the horse's average speed in kilometers per minute?
0.3 km/min
A cyclist rides 6 km east in 20 minutes. She then turns around and rides 2 km west in 10 minutes. What is the cyclist average speed and velocity?
Speed = 16 km/h
Velocity = 8 km/hr east
Describe the motion of the train.
11:00-12:00 = The train is at rest.
12:00-12:30 = The train travels 30 km in 30 minutes.
12:30-2:00 = The train travels 60 km in 1 hour and 30 minutes.
Put the cars in order from fastest to slowest.
1. Car B
2. Car C
3. Car A
4. Car D