Displacement
What is Displacement?
A change in position in a specific direction, it is a vector quantity
What is velocity?
Velocity is displacement divided by time, using direction
What is acceleration?
Acceleration is a change in velocity over time.
Positive velocity and acceleration=?
It means speeding up
What does free fall mean?
Free fall is a motion where gravity is the only force acting on it.
How is Displacement different from distance?
Distance is the total of the path length. On the other hand displacement considers direction and its shortest path.
How does speed differ from velocity?
Speed does not have direction, however velocity does.
What does negative acceleration mean?
Negative acceleration means an object is slowing down, or accelerating in the opposite direction.
Negative velocity and acceleration =?
It means speeding up
What is the value of free fall acceleration on Earth?
On Earth the value is 9.81 meters per second squared, downwards.
Will displacement ever be 0 even if distance is not?
Yes, this will happen when an object returns to its starting point
What is instantaneous velocity?
This is the velocity of an object at a specific moment in time.
In a velocity time graph, what does the slope equal?
The slope represents acceleration.
Positive velocity and negative accleration=?
It means slowing down
What is an object's velocity at the peak of its path during free fall?
It is zero.
What does it mean when calling displacement a vector quantity?
It means that displacement has both a magnitude and direction.
What does the slope of a position in time graph show?
It shows the average velocity of an object.
What unit is used for acceleration?
m/s^2 otherwise known as meters per second squared
If both acceleration and velocity are 0, then what does that mean?
It means the object is at rest
What is an objects acceleration at the top of its path?
-9.81 meters per second squared
If you walk 3 meters east and then walk 4 meters west, what is your displacement?
Your displacement would be 1 meter west.
Assuming a car traveled 120 km in 2 hours, what was the average speed?
The average speed was 60 km/h.
Describe the relationship between acceleration and direction, in relation to deceleration?
Deceleration will occur when acceleration is opposite as opposed to the direction of the motion.
What happens when acceleration is a zero, but velocity is a nonzero?
This means the object has constant velocity
Does mass affect free fall acceleration?
No, all objects accelerate the same due to gravity.