Describing Motion
Graphing Motion
Force & Acceleration
Units & Equations
Random
100
What is the difference between speed and velocity?
Speed- the rate at which the position of an object changes and how fast it’s moving.
Velocity- Speed and direction of an object
100
An object at rest is represented by a ________ line on a speed-time graph
flat/horizontal
100
a push or pull on an object
Force
100
What is the SI unit for average speed?
m/s
meters per second
100
What is the difference between mass and weight?
Mass- The amount of matter in an object
Weight- The measure of the force of gravity acting on an object
200
Describes an object's distance and direction from a starting point
Displacement
200
Name 4 items needed to correctly label a graph
1.Title
2.x-axis labels and units
3.y- axis labels and units
4.Data
5.Equal increments for measurement
6.Key
200
What force is pulling on you ALL of the time?
Gravity
200
What is the SI unit for mass?
gram (g)
200
Which unit should be placed on the horizontal (x) axis of a distance-time graph?
Time
300
In what three ways does acceleration occur?
Speed up, slow down, change direction
300
Constant speed is represented by a __________ line on a distance-time graph
straight/horizontal
300
What is the SI unit for force?
Newton
300
What is the equation for speed?
Speed = Distance / Time
300
How can you tell when an object has positive acceleration, negative acceleration, and zero acceleration on a speed-time graph?
400
The speed and the direction of a moving object
Velocity
400
A graph that shows how distance and time are related
Distance-time graph
400
Forces are ________________ when the net force acting on an object does not equal 0
Unbalanced
400
Calculate the average speed of a lion that runs 45 meters in 5 seconds.
Speed = 9 m/s
400
You are pushing a friend down a hill on a sled. Your friend pushes off the ground with a force of 3.2 N and you push the sled with a force of 5.5 N.
What is the net force exerted on the sled?
8.7 N Forward
3.2+ 5.5 = 8.7
500
A measure of how quickly the velocity of an object changes
Acceleration
500
This is always measured on the x-axis of a motion graph
Time
500
What is the SI unit for acceleration?
m/s²
(meters per second squared)
(Plus a direction)
500
What is the equation for acceleration?
Acceleration = final velocity – initial velocity
time
(Plus a direction)
500
What is the equation for speed, distance, and time?
