Answer:
b. -1.5 m/s²
Explanation:
Given the following data;
Initial velocity = 15m/s
Time = 10 seconds.
Since the car came to rest, final velocity = 0m/s
To find acceleration;
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of final speed from the initial speed all over time.
Mathematically, acceleration is given by the equation;
Where,
a is acceleration measured in 
v and u is initial and final speed respectively, measured in 
t is time measured in seconds.
Substituting into the equation, we have;
Acceleration = -1.5 m/s²
Answer:
Explanation:
Let m be the mass of Astronaut
M=mass of earth
G=Gravitational constant
R=radius of Earth
Force Exerted by Earth on Astronaut
acceleration due to gravity is 
When it is at 
Heat energy is transferred through Earth's atmosphere<span> in three ways: radiation,</span>conduction<span>, and convection. hoped this helped</span>
Answer:
1.5 A
Explanation:
Applying
V = IR'....................... Equation 1
make I the subject of the equation
I = V/R'.................. Equation 2
Where V = Voltage, I = current, R' = Total resistance.
From the question,
In a series connection,
R' = 0.2+0.3+0.5+5 = 6 ohm.
Given: V = 9V
Substitute into equation 2
I = 9/6
I = 1.5 A.
Note: Since all the resistors are connected in series, thesame current flows through them
Therefore the current flowing through the 5 ohm resistor = 1.5 A
Answer:
d. No, porque la ecuación de trabajo lo define.
Explanation:
En Física, el trabajo realizado se puede definir como la cantidad de energía transferida cuando un objeto o cuerpo se mueve a lo largo de una distancia debido a la acción de una fuerza externa.
Matemáticamente, el trabajo realizado viene dado por la fórmula;
<u>Dónde;</u>
- W es el trabajo realizado.
- F representa la fuerza que actúa sobre un cuerpo.
- d representa la distancia recorrida por el cuerpo.
Por lo tanto, podemos deducir de la definición de trabajo y su fórmula que el trabajo se realiza cuando un objeto (cuerpo) se mueve una distancia o experimenta cualquier forma de desplazamiento mientras transfiere energía.
