Answer:
So, the correct answer is 'Melatonin'.
Explanation:
thank me later
Answer:
The two space stations are 644.1653 miles far apart.
Explanation:
The distance of Huston and the International Space Station is 323 miles.
The distance of Huston and the Chinese space station Tiangong is 462 miles.
Angle between the two stations = 109⁰
So, applying the law of cosines as;
c² = a² + b² - 2abcosC
From the picture shown below, a = 323 miles and b = 462 miles
So,
c² = 323² + 462² + 2(323)(462)cos109 = 104329 + 213444 - 298452cos109
cos109 = -0.3256
So,
c² = 414948.9712
<u>c = 644.1653 miles</u>
<span>Remember the definition of acceleration:
a = Δv / Δt, this is change in velocity per unit of time.
Note that a and v are in bold to mean that they are vectors.
1) a body traveling in a straight line and increasing in speed: RIGHT:
Acceleration is the change in velocity, either magnitude or direction or both. So, a body increasing in speed is accelerated.
2) a body traveling in a straight line and decreasing in speed: RIGTH
A decrease in speed is a change in velocity, so it means acceleration.
3) a body traveling in a straight line at constant speed: WRONG.
That body is not changing either direction or speed so its motion is not accelerated but uniform.
4) a body standing still : WRONG.
That body is not changind either direction or speed.
5) a body traveling at a constant speed and changing direction: RIGHT.
The change in direction means that the body is accelerated. The acceleration due to change in direction is named centripetal acceleration.
</span>
Answer:
Explanation:
The Formula for finding the centripetal force is following
From the question, mass m and radius r is given. However, we have to find the velocity v;
using formula
putting values
Using formula
}[/tex]
v = 29866.02m/s
putting in formula of
Answer:
- Angular velocity is 0.25 rad/s
- Angular acceleration is 0.017 rad/s²
Explanation:
Given;
initial angular displacement, θ₁ = 0 radians
final angular displacement, θ₂ = 4.5 radians
Angular velocity is calculated as;
Angular acceleration is calculated as;
where;
is the final angular velocity = 0 rad/s
is the initial angular velocity = 0.25 rad/s
t₂ is the final time of the motion = 3 seconds
t₁ is the initial time of the motion = 18 seconds