Motion and Speed
A change in position over time
What is motion?
The rate at which velocity changes
What is acceleration?
a push or pull
What is a force?
A force of attraction between objects due to their masses.
What is gravity?
Any material that can flow and that takes the shape of its container
What is a fluid?
A quantity with both size and direction
What is vector?
V2-V1/t
How is average speed calculated?
Newton
What is the unit used to express force?
When gravity is pulling it down and no other forces are acting on it.
What is free fall?
The measure of how much force is acting on a given area.
What is pressure?
The straight line distance between 2 positions
The straight line distance between 2 positions
What is displacement?
m/s2
What are the units for acceleration?
the combination of all the forces acting on an object
What is a net force?
An object is in __________ when it travels around another object in space.
What is orbit?
The pressure caused by the weight of the atmosphere
What is atmospheric pressure?
distance/time
What is average speed?
A skater rounding a curve is an example of...
What is centripetal acceleration?
1. An object at rest stays at rest, and an object in motion stays in motion at the same speed and direction, unless it experiences an unbalanced force
2. The acceleration of an object depends on the mass of the object and the amount of force applied.
2. All forces act in pairs.
What are Newton's laws?
Earth's gravity is called an ________ ________
What is an attractive force?
What is a buoyant force?
________ _______ depends on displacement
What is average velocity?
The 3 types of acceleration are...
What are positive acceleration, negative acceleration, and centripetal acceleration?
The tendency of all objects to resist a change in motions
What is inertia?
9.8 m/s2 is the _________ on Earth
What is gravity?
The __________ of an object is related to its ability to sink or float
What is density?