It depends.. it might have to due with environmental changes.
Answer:
6.9m/s
Explanation:
Given parameters:
Acceleration of the object = 4m/s²
Distance = from x; 2m to x; 8m
Unknown:
Average velocity = ?
Solution:
From the given parameters, we use the right motion equation to solve the problem.
v² = u² + 2aS
v is the final velocity
u is the initial velocity
a is the acceleration
S is the distance covered
Distance = 8m - 2m = 6m
Initial velocity = 0m/s
The final velocity gives us the average velocity in this problem;
v² = 0² + (2 x 4 x 6) = 48
v = √48 = 6.9m/s
Answer:
q(ice) = -q(warm water)
Explanation:
Ice removes energy if ice is put in warm water and ice retains the very same amount of energy. Thus the water temperature heat sign is negative, and the ice heat sign is positive.
Answer:
La persona está nadando en la alberca a una profundida de 5.575 metros.
Explanation:
La presión absoluta (
) experimentada por la persona es la suma de la presión atmosférica (
) y la presión hidrostática de la columna de agua de la alberca (
), medidas en kilopascales. Es decir,
(1)
(2)
Donde:
- Densidad del fluido de la alberca, medida en kilogramos por metro cúbico.
- Aceleración gravitacional, medida en metros por segundo al cuadrado.
- Profundidad de la persona en la alberca, medida en metros.
Si sabemos que 
, 
, 
y 
, entonces la profundidad de la persona en la alberca es:
La persona está nadando en la alberca a una profundida de 5.575 metros.
Answer:
Yes
Explanation:
Accerelation is measured by change in velocity. So naturally, if an object is slowing down, its velocity is decreasing so acceleration is negative. If it is speeding up velocity is increasing so positive acceleration.
(Velocity final - Velocity initial)/t
Note that this does not apply only to gravity, but to all linear accelerations
