Vocabulary
How far an object is from where it started
Displacement
Unit of measurement for time
seconds, minutes, hours
Are graphs a good way compare and represent distance vs. time?
yes
Is the acceleration positive or negative when slowing down
Negative
The the length an object travels
Distance
The units for acceleration
m/s2
Constant speed on a speed-time graph looks like
A straight line across
Motion of a car if the line on a distance-time graph is curving upward.
Speeding up
A change of an object's position relative to a reference point
Motion
Units to measure speed
seconds, hours
A graph that can help you predict the speed of a moving object.
Distance-Time Graph
Three ways to change acceleration
speeding up, slowing down, changing direction
The distance an object moves in a unit of time
Speed
The SI unit representing speed or velocity
m/s
What is on the y-axis of a distance-time graph?
distance
What is a car doing if on a speed-time graph it is a diagonal line going down?
slowing down
What is velocity?
The speed and direction of a moving object
What is the equation for average speed?
s=d/t
The slope of a distance vs. time graph represents this.
speed
A race car moves at constant speed around a track, is the car accelerating?
No
What is measured for how long it takes for an object to travel from one point to another?
Time
What is a reference point?
the starting point you choose to describe the location or position of an object
Motion of a car if the line on the distance-time graph is horizontal.
Not moving
What are the three ways an object can accelerate?
Speed up, slow down, or change direction
The rate of change in velocity is known as this.
acceleration
Preston walks 10km west to the grocery store. He shops and then walks back 10km east to his house. What was the distance that he covered?
20km
The sloping line on a speed-time graph represents
acceleration
Did a change in direction support acceleration with the matchbox cars?
Yes (deacceleration)