what is the difference between escape velocity orbital velocity and terminal velocity?
530494
Escape velocity is the minimum velocity at which the object must be ejected from a surface (usually Earth) to just go past its gravitational pull. Terminal velocity is the maximum velocity that the object can reach if it falls back inside.
799364
In this example, a speed of 50% of terminal speed is reached after only about 3 seconds, while it takes 8 seconds to reach 90%, 15 seconds to reach 99% and so on. Higher speeds can be attained if the skydiver pulls in his or her limbs (see also freeflying).
38248
Yes. The object will slow down to its terminal velocity if its speed starts higher than its terminal speed. ... This will reduce the drag force until the drag force and weight are equal, the object's acceleration is zero, and the object will have constant speed -- it's terminal speed.
1034502
With terminal speeds of over 5,000 m/s, ballistic missiles are much harder to intercept than cruise missiles, due to the much shorter time available. Therefore, ballistic missiles are some of the most feared weapons available, despite the fact that cruise missiles are cheaper, more mobile, and more versatile.
899207
The trajectory has horizontal (x) and vertical (y) components. Velocity is a vector (it has magnitude and direction), so the overall velocity of an object can be found with vector addition of the x and y components: v2 = vx2 + vy2.
1342942
So as the body accelerates its velocity and the drag increase. ... When drag is equal to weight, there is no net external force on the object, and the acceleration becomes zero. The object then falls at a constant velocity as described by Newton's first law of motion. The constant velocity is called the terminal velocity.
1418018
This is the amount of surface area positioned directly into the wind. On average, skydivers reach a terminal velocity of about 54 m/s (or 177 ft/s)! That's pretty fast! Skydivers often say that jump-anxiety just melts away once you hit terminal.
83174
The orbital velocity of the satellite depends on its altitude above Earth. The nearer to Earth, the faster the required orbital velocity. At an altitude of 124 miles (200 kilometers), the required orbital velocity is a little more than 17,000 mph (about 27,400 kph).
1316534
Phase velocity of a wave is the velocity with which its phase travels in space, while group velocity is the velocity with which its amplitude(envelope) travels in space.
1257518
Terminal velocity is the point at which the drag force equals the force of gravity. Terminal velocity will depend on the mass, cross sectional area, and drag coefficient of the object as well as the density of the fluid through which the object is falling and gravitational accelleration.
1241949
Speed is a scalar, and average velocity is a vector. Average velocity indicates direction and can be represented as a negative number when the displacement is in the negative direction. Average speed does not indicate direction and can only be positive or zero.
180607
Change in velocity per unit time is acceleration, so if velocity is constant, no acceleration. You can however have accelerated motion with constant speed, this is the case for object in circular orbit. But you can't have constant velocity in an accelereted motion…. ... A body moves from rest position after 5 seconds.
457976
Answer and Explanation: The major difference between the wave velocity and particle velocity is that while propagation through the medium, the wave velocity is always constant along with the condition that density, as well as the frequency of the wave source, is constant. ... Therefore, particle velocity keeps changing.
586809
The short answer is that velocity is the speed with a direction, while speed does not have a direction. Speed is a scalar quantity—it is the magnitude of the velocity. Speed is measured in units of distance divided by time (e.g., miles per hour, feet per second, meters per second, etc.).
1351976
If a body is moving with constant velocity, acceleration is zero. So net force acting on it will be also zero. But the body has energy due to its constant motion. Take the case of a freely falling body: it reaches its terminal velocity (120mph) when gravity = air resistance (drag).
40401
Radial velocity is the speed towards or away from us. Tangential velocity is the velocity across our field of view.
447593
That speed is called the escape velocity . where G is the gravitational constant, M is the object's mass, and R is its radius. Note that for a given mass, as R gets smaller, V will get larger. ... The mass doesn't affect the escape velocity.