Position
What is a reference point?
It is a point used to describe the location or motion of an object
Motion can be in _____ dimensions
2
What is speed?
How fast something is going
What is acceleration?
The change in velocity of an object
What is momentum?
It is how difficult it is to stop, slow down, or change the direction of an object in motion.
Distance and direction
The 2 dimensions of motion are __________________ and ________________
horizontal and vertical
What is the formula for speed?
Distance / Time
What is the formula for acceleration?
What is the formula for momentum?
Mass x Velocity
When the position of an object changes, we say that the object is in ___________
motion
What is the distance from an object's starting and ending points called?
displacement
What is the difference between speed and velocity?
Velocity must also include the direction
What is deceleration?
When an object's speed slows?
Which has a greater momentum at 20 mph: a 10 pound bowling ball or a 3 pound soccer ball?
The bowling ball
Describe your position using a reference point in the classroom
Answers vary, but must include distance, direction, and reference point
What is the total length over which an object has traveled?
distance
Can velocity change when speed stays the same? Explain.
Yes, if the object changes direction but maintains the same speed, the velocity changes
What happens when acceleration is zero?
The object is not changing velocity
Which 1 pound object has greater momentum: a softball traveling at 40 mph or a softball traveling at 60 mph?
The softball traveling at 60 mph
An object's position can be described using _________ and _______________ directions
positive, negative
Can you combine displacements? Explain
You can add displacements in the same direction or subtract displacements in the opposite direction. You cannot combine displacements that are not in the same or opposite directions.
What are the four types of speed?
Constant, Changing, Average, and Instantaneous
Can acceleration change when speed stays the same? Explain
Yes, acceleration can change at constant speed if the object changes direction
a 0.5 pound baseball traveling at 60 mph
OR
a 1 pound softball traveling at 30 mph?
They have the same momentum