Friction and Gravity
Newton's Laws
Satellite and Rockets
Motion
100
Friction is measured in Newtons
What is friction measured in?
100
The greater an object's inertia, the greater the force needed to change its motion
What is inertia?
100
Any object that orbits another object in space.
What is a satellite?
100
described by its strength and by the direction in which it acts
What is a force?
200
Friction is the force that two surfaces exert on each other when they rub against each other
What is Friction?
200
Objects at rest stay at rest and objects in motion stay in motion (only apply's when there is no friction)
What is Newton's First Law
200
the gases it expels with a downward action force exert and equal buy opposite reaction force on the rocket
What causes a rocket to rise?
200
forces acting on an object result in a net force and a change in the object's motion
What is an unbalanced force?
300
Sliding, Rolling, Static, and Fluid friction
What are the four types of friction?
300
acceleration is equal to net force/mass
What is Newtons Second Law
300
as long as this upward pushing force is greater than the downward pull of gravity, there is a net force in the upward direction.
What is thrust?
300
forces acting on an object do not change the object's motion
What is a balanced force?
400
Weight varies with the strength of the gravitational force but mass does not
what is the difference between weight and mass?
400
for every action, there is an equal and opposite reaction
What is Newtons Third Law
400
1. circular motion 2. satellite motion 3. satellite location
What are the three reasons why satellites orbit?
400
the SI unit of force
What is a Newton?
500
the force of gravity is an unbalanced force, which causes an object to accelerate.
What is free fall?
500
depends on the object's mass and the objects and on the net force acting on the object acceleration = net force/mass
What is acceleration?
500
Satellites in orbit around Earth continuously falling toward Earth, but because Earth is curved they travel around it
What are satellites in orbit?
500
When you know both the speed and direction of an object's motion, you know the velocity of the object.
What is velocity?
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