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5 days ago · In this video, we dive deep into the concept of escape velocity, a critical aspect of gravitation. 🌌 Join us as we: - Define escape velocity - Derive the escape velocity formula -...
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3 days ago · Orbital velocity refers to the velocity required by satellites {natural or artificial) to remain in their orbits. The orbit or the orbital pathway, whether elliptical or circular, displays a balance between the inertia of the satellite which makes it move in a straight line with the gravity of the planet which pulls the satellite closer to the ...
2 days ago · The rate of change of displacement of an object with respect to time, or the rate of change of position, is called velocity. Graphically, it is the slope of the displacement function. It is a vector quantity and thus gives both a magnitude and direction: \[\text{velocity} =\dfrac{\text{displacement}} {\text{time}}=\dfrac{\Delta x}{\Delta t}.\]
1 day ago · It is okay for velocity measurements to be frame dependent because Newton's laws don't care about the absolute value of velocity, but only changes in it. Acceleration on the other hand is central to the laws of motion.
2 days ago · Larger masses require more energy to achieve escape velocity. Calculating escape energy is essential for anyone involved in physics, aerospace engineering, or space exploration, offering a clear understanding of the energy dynamics involved in overcoming gravitational forces.
1 day ago · The velocity of the projectile can be resolved into two mutually perpendicular components: the horizontal component and the vertical component. Acceleration changes velocity. If acceleration in a particular direction is zero, then velocity in that direction remains the same.
2 days ago · Current evidence suggests that the expansion of the universe is accelerating (see Accelerating universe), meaning that for any given galaxy, the recession velocity dD/dt is increasing over time as the galaxy moves to greater and greater distances; however, the Hubble parameter is actually thought to be decreasing with time, meaning that if we ...
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