Position Graphs
If an object is standing still, then its position graph would look like this.
A horizontal line
The slope of a velocity graph tells you this.
acceleration
An object that is standing still has an acceleration of _______
zero
The unit of time we use in physics is ______
seconds
True or false. Acceleration and velocity are basically the same thing.
False
Object A has a constant speed. Object B also has a constant speed, but object B is going faster. The position graph for object B will be __________.
steeper (or larger slope)
If a velocity graph is a horizontal line, then what is the object doing?
moving at a constant speed
An object that is moving at a constant speed of 30 m/s has an acceleration of _______
zero
The unit of position is _____
meters
True or false. An object thrown upward has an acceleration that is positive 9.8.
False. The acceleration of gravity is -9.8.
A position graph that curves upward, getting steeper, describes an object that is _______.
speeding up
If a velocity graph has a downward slope, then what is the object doing?
It is slowing down
An object is thrown upward. When it gets to its highest point, its ______ is equal to zero.
velocity
The unit of speed or velocity is _______
meters per second
If an object moves 5 meters right then 3 meters left, its displacement is ________
2 meters
True or false. If a position graph line is a straight downward diagonal line, then the object is slowing down.
False. It is a constant speed because it is a straight line.
To find the distance an object has moved from a velocity graph, you have to calculate this.
The area under the graph
You can use -9.8 as the acceleration for what type of physics problem?
free fall
The unit for acceleration is ____________
meters per second squared or m/s2
An object that has a negative acceleration must be getting slower.
False. The negative means downward.
The area under a position graph tells you this.
Nothing
If the line on a velocity graph touches the x-axis, what does that mean?
The object has stopped (v=0)
Which has a larger acceleration? An object moving at a constant speed of 10 m/s or an object moving at a constant speed of 20 m/s?
Neither. They both have zero acceleration
The unit for the constant g is _________
meters per second squared or m/s2
If you throw an object up into the air, is there a time in its motion when it has zero acceleration?
No. It always has the acceleration of gravity (-9.8)