Kinetic and Potential Energy
What is work? work = force x distance
A vector is a quantity that has both size and direction. Velocity is a vector. Velocity measures direction and this magnitude.
What is speed?
Acceleration is a change in _____ over time
What is velocity. Acceleration is a change in speed OR direction.
Force, a vector having size and direction, is measured in this unit.
What is a Newton?
Gravity is the force objects exert on each other because of their ________.
What is mass?
This is the unit we use to measure energy and work.
What is a joule? 1 Joule = 1 Newton x 1 Meter
The old man marched 100 kilometers in 4 days to achieve this average speed.
What is 25 kilometers per day. Average Speed = Distance/Time
This type of acceleration results in circular motion. This can happen when an object is constantly changing direction, but not necessarily changing speed.
What is centripetal acceleration?
The tendency to resist change in motion.
What is inertia?
These two factors affect gravitational force.
What are mass and distance? Gravitational force increases when distance is decreased. Gravitation pull increases when mass is increased.
All objects in motion have kinetic energy. The amount of kinetic energy a moving object possesses depends on these two factors.
What are mass and speed?
The standard unit of length.
What is a meter?
This is the formula for average acceleration.
What is (Final Velocity - Starting Velocity)/Time?
The combination of all forces acting on an object.
What is net force?
An elliptical path one object takes around another object.
What is an orbit?
The combination of potential and kinetic energy creates this form of energy.
What is mechanical? Mechanical Energy exists in a closed system. Mechanical Energy = Potential Energy + Kinetic Energy Only friction can drain energy from this system. In the presence of friction, mechanical energy is converted into thermal energy.
To achieve this average speed, the old woman ran 3 laps around a 100 meter track. Her first lap took 10 seconds. Her second lap took 20 seconds. Her third lap took 20 seconds.
What is 6 meters per second? Average Speed = Distance/Time
A decrease in speed while continuously traveling in the same direction.
What is negative acceleration?
This is the formula for calculating force.
What is Mass x Acceleration?
The force of gravity between Earth and any given object is the equivalent to this measurement.
What is weight?
This law states that energy cannot be created or destroyed, but can only be transformed into other forms of energy.
What is the Law of Conservation of Energy?
This measures how fast something moves, or how far it moves in a given amount of time.
What is speed?
An increase in speed while continuously traveling in the same direction?
What is positive acceleration?
Two most common outside forces which affect moving objects. One is based on mass and distance, the other can be caused by dragging or rolling an object on a surface, working against its forward motion.
What are gravity and friction?
What is the maximum speed an object attains while in free fall and experiencing a balanced force in the vertical direction?
Terminal Velocity