Flashcards
Math 10 - IB - Physics 1
Flashcards do conjunto (10)
- 1What is a scaler and what is a vector?scaler: only a magnitude
vector: magnitude AND direction - 2What is 10 m/s? 1. Is it a scaler or a vector? 2. Is it speed or velocity? 3. What is the magnitude, direction and units of this measure?1. 10 m/s is a SCALER (because no direction was given to us)
2. It is SPEED, because velocity is a vector
3. Magnitude is 10, and there is no direction. Unit are in [meter]/[second] - 3How do I use sig digs?...
- 4What is the law of energy?Energy cannot be CREATED or DESTROYED. It can only be transformed from one type to another.
- 5What is the equation for KINETIC energy? Do you know a good memory trick?E = 1/2 m* v^2
(Remember E=m*c ^ 2?... from Einstein?) - 6What does the word kinetic mean? How would I increase something's KINETIC ENERGY?1. Kinetic = moving
2. If E = 1/2 m * V ^2, then if I increase "m" or "v" (especially v!)... then I increase the kinetic energy - 7What are the units to measure ENERGY?J, joule
- 8According to Kinetic Energy, what does a Joule really break down into for "units" ?If E = 1/2 * m * v^2
Then [ J ] = [kg] * [m/s]^2
Which simplifies to
[J] = [kg*m^2/s^2] - 9A soccer goaler catches and holds the fast-moving ball. What happens to the kinetic energy of the ball? The energy disappears? The energy is converted?OF COURSE IT NEVER DISAPPEARS! Remember the "law of conservation of energy"...
What form is the kinetic energy formed into? - 10What are the two rules to round to appropriate sig digs?1. add/sub: Round to least accurate number
2. multi/div: Round to least sig digs
Informações
- Descrição
- Physics I, IB. Energy, units, sig digs. etc.
- Criado por
- Lauren Jatana
- Visualizações
- 33
- Tags
- Avaliação