Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
34 Cards in this Set
- Front
- Back
|
What causes objects in space to be in free-fall? |
Weightlessness |
|
|
What direction would the path of a ball follow without gravity? |
Horizontally |
|
|
"To every action there is an opposite reaction" |
Newton's third law |
|
|
The path of a projectile. |
Curved |
|
|
Three factors of Newton's second law |
Mass, Force, Acceleration |
|
|
Rate of acceleration that causes objects to fall |
9.8m/s squared |
|
|
What is the formula for Newton's second law of motion? |
F=MA |
|
|
What is the upward force falling through the air? |
Air Resistance |
|
|
A penny and a feather would fall at what rate? |
The same |
|
|
What is the unit for momentum? |
KG. m/s |
|
|
What is the higHest velocity a falling object could reach? |
Terminal Velocity |
|
|
Momentum when one objects hits another |
Momentum spreads out. |
|
|
What causes a feather to fall more slowly than a brick? |
Air resistance |
|
|
What causes a car to have more momentum than a toy car? |
More mass |
|
|
What is the force of gravity on an object? |
Weight |
|
|
What causes long term problems for the human body? |
Being Weightless |
|
|
What is the momentum of the pool balls after they collide is explained by? |
The law of conservation of momentum |
|
|
What does p represent in p=mv |
Momentum |
|
|
An object that accelerates toward the center of the circle. |
Centrifical Force |
|
|
What is the acceleration due to gravity? |
9.8 m/s squared |
|
|
What is the formula for Newton's second law? |
F=MA |
|
|
Why does an object that is moving in a circular motion accelerate toward the center of the circle? |
Centrifical Force |
|
|
Explain what happens when a penny and a feather fall in the absence of the air ? |
They hit at the same time |
|
|
Why does a feather fall through the air more slowly than a 10 pound weight? |
Air Resistance |
|
|
What is the relationship of mass, acceleration, and force? |
Newton's second lawriction |
|
|
Frictional force exerts air on a moving object. |
Air resistance |
|
|
The tendency of an object to resist any change in its motion. |
Inertia |
|
|
The acceleration of an object as produced by a net force is directly proportional to magnitude of the net. |
Newton's second Law |
|
|
A pair of forces acting on to interacting objects |
Newton's third law |
|
|
The quantity of motion of a moving body |
Momentum |
|
|
A missile designed to be fired by a rocket or gun |
Projectile |
|
|
The speed of something in a given direction. |
Velocity |
|
|
The force that attracts a body toward the center of the Earth. |
Gravity |
|
|
Equation for Reaction force |
A=N/M |
