Answer:
Its velocity and acceleration are both nonzero.
Explanation:
The path of the wrench is trajectory while the acceleration due to Moon's gravity is acting on it.
As the velocity follows the path, as soon as it reaches maximum height, the vertical component of velocity is zero but the horizontal component is still there, constant.
Answer:
Explanation:
The polarization characteristics depend on the shape, size, and optical properties of the surface particles. Generally, the radiation is linearly polarized and is said to be negatively polarized if it lies in the scattering plane and positively polarized if it is perpendicular to the scattering plane.
Technically? It's not wrong. A star is a ball of gas that is held together by it's own gravity of which it constantly struggles against. Gravity constantly works to try and make the star collapse. However, stars are extremely hot at their cores which help the star push against it's own gravity creating a sort of equilibrium. So long as the star continues to push against gravity, it will not collapse, however eventually a star will lose its energy and eventually collapse into a black hole.
<h2>Given :-</h2>
<h2>To Find :-</h2>
<h2>Solution :-</h2>
As we know that,
<h3>F = ma</h3>
- F is the Force applied
- M is the Mass
- A is the Acceleration
<u>According</u><u> </u><u>to</u><u> </u><u>the question</u><u>, </u>
F = 20 × 2
F = 40 N
<h3>Hence :-</h3>
Force applied is 40 N
<h2>Know More :-</h2>
- First equation of motion
- v = u + at
- Second equation of motion
- s = ut + ½at²
- Third Equation of motion
- v² - u² = 2as
Answer:
2677.3 N
Explanation:
v₀ = initial speed of the hand = 4.75 m/s
v = final speed of the hand = 0 m/s
m = Total mass of hand and forearm = 1.55 kg
t = time interval for hand to come to rest = 2.75 ms = 0.00275 s
F = Force applied on the leg
Using Impulse-change in momentum equation
F t = m (v - v₀)
F (0.00275) = (1.55) (0 - 4.75)
F = - 2677.3 N
magnitude of force = 2677.3 N
