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;
3 Cards in this Set
- Front
- Back
|
Kinetic energy:
1) Notation? 2) Formula? 3) What type of quantity? |
1) Ek.
2) Ek = 1/2mv². m = mass [kg], v = speed [m s⁻¹]
3) It is a scalar quantity, it has only a magnitude, no direction. |
|
|
Understanding values for Ek:
1) Ek = 0? 2) Ek < 0? 3) Ek > 0? |
1) The object is stationary.
2) Ek cannot be negative as it is a scalar quantity.
3) The object is moving. |
|
|
Changes in Ek:
1) ΔEk < 0? 2) ΔEk = 0? 3) ΔEk > 0? |
1) The object is slowing down.
2) The object is in constant movement (which may be stationary).
3) The object is speeding up. |
