Dynamics And Space Flashcards
What is a Scaler and Give 4 Examples
Scaler - Defined only by its magnitude (size)
Examples :
- Time
- Distance,
- Speed,
- Energy
What is a Vector and Give 4 Examples
Vector - Defined by the magnitude and its direction (angle)
Examples :
- Displacement
- Velocity
- Force
- Acceleration
What is Displacement?
The shortest distance between your starting and end point
What is Newtons First Law of Motion?
An object in motion will stay in motion unless acted on by an external force.
What is Newtons Second Law of Motion?
If an object is accelerating there must be an unbalanced force acting on the object.
What is Newtons Third Law of Motion?
For every action there is an equal and opposite reaction.
What is a Geostationary Satellite?
- Stays at the same position above the earth at all times (moves with the earth)
- Orbital Period of 24 hours
- Has an altitude of 36,000km
What is a Polar Satellite?
- Orbits earth’s poles
- It has a short orbital period of approximately 100 minutes
- Has an altitude of 1000km
Definition of Emission Spectra
Light emitted from an object
Definition of Absorption Spectra
The light that is absorbed by an object.
What is the Formula for Charge?
Q = I x T
Equation for Acceleration
a = v - u / t
a = Acceleration (ms-2) v = Final Speed (ms-1) u = Initial Speed (ms-1) t = Time (s)
What is Work Done?
Work done is the transfer in energy from one type to another. When a force us applied over a certain distance work done is to transfer the energy from one type into another.
What is the Formula for Work Done
W = F x d
W = Work Done (J) F = Force (N) d = Distance (m)
What are the 6 Prefixes?
G - Giga x 10 (9) M - Mega x 10 (6) k - kilo x 10 (3) m - milli x 10 (-3) u - micro x 10 (-6) n - nano x 10(-9)
