The formula we need to use is displacement.
, where xf is final position and xi is initial position.
We report the final position of 5 and the displacement of 2 so the formula is now:
.
So the initial position of truck A is 3.
Hope this helps.
r3t40
Answer:
a = - 1.987 × 10⁶ ft/s²
t = 6.84 × 10⁻⁴ s
Explanation:
v₀ = 910 ft/s
x = 5 in.
relation v = v₀ - k x
v = 0 as body comes to rest
0 = 900 - 5k/12
k = 2184 s⁻¹
acceleration

where
(A) a = -k × v
at v= 910 ft/s
a = - 1.987 × 10⁶ ft/s²
(B) at x = 3.9 in.
v = 910 - 3.9(2184)/12
v = 200.2 m/s




t = 6.84 × 10⁻⁴ s
La respuesta correcta es 180 centímetros cúbicos o 180 
Explicación:
El primer paso para saber cuanto alcohol desaloja el prisma es calcular el volumen total del prisma. El volumen se puede encontrar usando la formula V (Volumen) = B (base) x h (altura). El proceso se muestra a continuación:
V = B x h
V = 36
x 10 cm
V= 360 
Finalmente, el volumen total del prisma debe dividirse en 2 considerando que solo la mitad del prisma fue sumergida y esta mitad equivale al volumen del alcohol desplazado.
360
÷ 2 = 180
We will have the following:
a. We determine the tension force of T2 as follows:
We know that the system must be at equilibrium on the horizontal axis:

So:

So, the value of T2 is approximately 1132.7 N.
b. We will determine the torques created by T1 and T2 as follows:
T1:

T2:

So the torques of T1 and T2 on the base are approximately 8343.5 N*m and 6737.6 N*m respectively.
c. The torques around that axis generated by the normal force and the weight are both 0 N*, since they are parallel to the axis.
d. We will determine the angular acceleration as follows:

So, the angular acceleration is approximately 1.25 radians/ s^2.
Answer:
(B) The number of protons - only the number of protons in the nucleus determines the element - mass and neutrons can vary for the same element