Vocabulary
Average Speed
Velocity
Distance-Time Graphs
Newtons First Law of Motion
100
Changes in position over time relative to a reference point.
motion
100
What is the formula for calculating average speed?
Distance/Time
100
True or False? Velocity include both speed and direction
True
100
What does a horizontal( flat ) line represent on a distance- time graph?
A. Constant Speed
B. Resting/ Stopped
C. Acceleration
B. Resting/ Stopped
100
A soccer ball is at rest on the field. A player kicks it, and it starts rolling. What type of force caused the ball to move?
unbalanced forces
200
The speed and the direction of a moving object
velocity
200
What units are used to measure speed?
Provide two examples.
Km/hr
mi/hr
200
A plane flies 600 km west in 3 hours. What is its velocity?
200 km/hr west
200
A student walked from the football field to the gym. The graph shows the short walk.
How long did the student walk back toward the field?
20 seconds
200
A book is resting on a table. The book does not move. What does this tell us about the forces acting on the book?
The forces are balanced
300
The the total path traveled by an object
Distance
300
A boat travels 60 km downstream in 2 hours and 30 km upstream in 1.5 hours. What is the average speed for the whole trip?
30 km/hr
300
A car drives 60 km east in 1 hour, then 80 km west in 2 hours. What is the average velocity of the car for the whole trip?
10 km/h west
300
What does a curve on a distance-time graph indicate?
A curve indicates that the object is accelerating or decelerating.
300
A person pushes a box with 30 N of force to the right, while another person pushes with 20 N of force to the left. What will happen to the box?
It will move to the right because forces are unbalanced
400
A quantity that has both magnitude( speed) and direction
Ex: velocity
Vector
400
A runner finishes a 400-meter race in 80 seconds. What is the runner’s average speed?
5 m/sec
400
An archer releases an arrow toward a target. The arrow travels 165 meters east in 2 seconds. What is the velocity of the arrow?
82.5 m/s east
400
What does a straight diagonal line on a distance-time graph indicate?
the object is moving at a constant speed.
400
Maria is riding in the back seat of a car. The car is moving forward quickly, and then the driver suddenly hits the brakes. Maria’s body keeps moving forward, and she has to catch herself with the seatbelt.
Inertia caused her body to keep moving forward
500
It is calculated by subtracting the final position of an object from its initial point.
displacement
500
A cyclist rides 36 km in 2 hours, then 24 km in 1 hour. What is the cyclist’s average speed for the whole trip?
20 km/hr
500
Which of the following is an example of velocity?
A. running 20 m/s
B. running 20 meters
C. running 20 m/s south
500
The time–distance graph shows the motion of two cars A and B. Based on the information in the graph, what can we conclude? Explain.
Car B is moving at a greater speed.
500
Which illustration demonstrates an unbalanced force?
D