Table of Contents

## When Travelling in an elliptical orbit the Earth satellite travels fastest when it is?

In an elliptical orbit the satellite’s velocity changes depending on where it is in its orbital path. When the satellite is in the part of its orbit closest to the Earth it moves faster because the Earth’s gravitational pull is stronger.

## Where in an elliptical orbit is the speed of a satellite maximum?

It acts as a falling object. Where in an elliptical orbit is the speed of a satellite maximum? In an elliptical orbit the speed would be the largest **at the closest point (perigee)**.

## When a satellite travels at a constant speed the shape of its path is?

A satellite in orbit around Earth traces an oval-shaped path called **an ellipse**. An ellipse is the closed path taken by a point that moves in such a way that the sum of its distances from two fixed points is constant.

## Which would require the greater change in a satellite’s orbital speed?

**A high-altitude satellite**will require a greater orbital speed than a low-altitude satellite. By definition a geosynchronous satellite orbits the earth in a perfect circle maintaining the same distance above the surface of the earth.

## At which point is an object traveling the fastest in its orbit *?

A planet moves faster **when it’s closer to the sun than when it’s farther from the sun**. The mathematical relationship between a planet’s distance from the sun and the time it takes for a planet to revolve around the sun. Planets closer to the sun take less time orbit it than planets farther from the sun.

## When no air resistance acts on a fast moving baseball what happens to its acceleration?

Neglecting air resistance what is its vertical acceleration? Its horizontal acceleration? Its vertical acceleration is g because the force of gravity is downward. **Its horizontal acceleration is zero** because no horizontal force acts on it.

## What is the fastest orbiting satellite?

At about 10:54 p.m. EDT Parker Solar Probe surpassed 153 454 miles per hour — as calculated by the mission team — making it the fastest-ever human-made object relative to the Sun. This breaks the record set by the German-American Helios 2 mission in April 1976.

## How do you find the speed of a satellite in orbit?

## Why does the speed of a satellite change in an elliptical orbit?

**because there is a component of the force in the direction of the satellite’s motion**. … The force of gravity does no work on a satellite in circular orbit since the force is always perpendicular to the planet’s direction of motion.

## Is satellite revolving around the earth is an example of a projectile?

Once launched into orbit the only force governing the motion of a satellite is the force of gravity. Newton was the first to theorize that a projectile launched with sufficient **speed would** actually orbit the earth.

## What speed is required to leave the atmosphere?

On the surface of the Earth the escape velocity is **about 11.2 km/s** which is approximately 33 times the speed of sound (Mach 33) and several times the muzzle velocity of a rifle bullet (up to 1.7 km/s). However at 9 000 km altitude in “space” it is slightly less than 7.1 km/s.

## Why would a satellite orbiting Earth most likely fall into the atmosphere?

Satellites don’t fall from the sky because they are orbiting Earth. Even when satellites are thousands of miles away Earth’s gravity still tugs on them. Gravity–combined with the **satellite’s** momentum from its launch into space–cause the satellite go into orbit above Earth instead of falling back down to the ground.

## How does orbital velocity change in an elliptical orbit?

A planet’s orbital speed changes depending on how far it is from the Sun. The closer a planet is to the Sun the stronger the **Sun’s gravitational pull** on it and the faster the planet moves. The farther it is from the Sun the weaker the Sun’s gravitational pull and the slower it moves in its orbit.

## At what part of an elliptical orbit does an earth satellite have the greatest speed the lowest speed?

At what part of an elliptical orbit doesn’t earth satellite have the greatest speed? The lowest speed? The satellite has its greatest speed **when its nearest the earth** and its lowest speed when it’s farthest away from the earth.

## When a satellite is orbiting Earth at constant speed there is no acceleration acting on it?

Why does a satellite in a circular orbit travel at a constant speed? There is no component of force acting along the direction of motion of the satellite. The **net force acting on the satellite is zero**.

## Which planet’s orbit is the most elliptical?

**Mercury**has the most elliptical orbit with an eccentricity of 0.206.

## What is the fastest moving planet in a solar system?

Mercury

(Grades 5-8) series. Mercury is the smallest and fastest planet in the solar system. It is also the closest planet to the sun.Mar 30 2011

## At what point in a planetary orbit is the planet’s speed the slowest quizlet?

A planet moves most rapidly when it is nearest the Sun at a point on its orbit called perihelion. Conversely a planet moves most slowly when it is farthest from the Sun at a point called **aphelion**. It sweeps out area at a constant rate no matter where it is in its orbit.

## Is motion where the speed and direction do not change?

**constant velocity**: Motion that does not change in speed nor direction.

## What happens to the vertical velocity of an object as it travels through the air?

(c) The velocity in the vertical direction **begins to decrease as the object rises** at its highest point the vertical velocity is zero. As the object falls towards the Earth again the vertical velocity increases again in magnitude but points in the opposite direction to the initial vertical velocity.

## What affects projectile motion?

FACTORS AFFECTING PROJECTILE MOTION

There are three main factors that affect the trajectory of an object or body in flight: **the projection angle magnitude of projection velocity and height of projection**.

## What is the fastest Earth orbit?

Answer: **Mercury** is the winner at an orbital speed of about 47.87 km/s (107 082 miles per hour) which is a period of about 87.97 Earth days.

## What is the fastest thing orbiting Earth?

**NASA solar probe becomes fastest object ever built as it ‘touches…**

- Fastest human-made object: 244 255 mph (393 044 km/h).
- Closest spacecraft to the sun: 11.6 million miles (18.6 million kilometers).

## What’s the fastest thing in orbit?

1. **Helios Satellites** – 157 078 mph.

## What is the speed of satellite?

To maintain an orbit that is 22 223 miles (35 786 km) above Earth the satellite must orbit at a speed of **about 7 000 mph (11 300 kph)**. That orbital speed and distance permits the satellite to make one revolution in 24 hours.

## What determines the speed of a satellite?

1. What factor determines the speed of a satellite like the ISS? The ISS orbit speed is dependent on how far the ISS is from the Earth. The **Gravitational Constant and the Mass of the Earth** are both constants so only R the distance of the satellite above the center of the Earth affects the speed of a satellite.

## How do you find the speed of an orbiting object?

## Why does a satellite in elliptical orbit gain speed as it moves closer to the planet How does this relate to Kepler’s second law?

Kepler’s Second Law of Planetary Motion

This law describes the speed of an object traveling in an elliptical orbit around a celestial body. … Thus **the speed of the object increases as it nears the celestial body and decreases as it recedes from the it**.

## Why is the orbital speed of an Earth satellite in a circular orbit constant?

So the satellite orbits the earth with a constant speed of 3.07km/s **because the magnitude of its speed is constant**. … At the north of its orbit the direction changes to rightward. Therefore the velocity of the satellite is always changing. (The direction of velocity is tangential to its circular path.)

## When a satellite is in orbit around the Earth the force of gravity on the satellite?

True weightlessness only occurs in deep space where the gravitational force on an object is zero. A satellite in a stable circular orbit around Earth is continually in free fall. As it orbits it experiences a gravitational **force towards the centre of Earth** which causes it to change direction and ‘fall’ towards Earth.

## When a satellite travels at a constant speed the shape of its path is?

A satellite in orbit around Earth traces an oval-shaped path called **an ellipse**. An ellipse is the closed path taken by a point that moves in such a way that the sum of its distances from two fixed points is constant.

## How is a satellite a projectile?

satellite is a projectile. … The force of gravity acts upon **a high speed satellite to deviate its trajectory** from a straight-line inertial path. Indeed a satellite is accelerating towards the Earth due to the force of gravity. Finally a satellite does fall towards the Earth only it never falls into the Earth.

## What happens when a satellite speeds up?

If the satellite is moving too quickly then the gravitational attraction between the Earth and the satellite is too weak to keep it in orbit. If this is the case **the satellite will move off into space**. This occurs at speeds around or above 11 200 metres per second (m/s).

## How fast do you need to go to leave the Earth’s orbit?

If you want to completely escape Earth’s gravity and travel to another moon or planet though you need to be going even faster – at a speed of at least 7 miles per second or **about 25 000 miles per hour**.

## How to Calculate the Speed of satellite in elliptical orbit

## Speed of a Satellite in Circular Orbit Orbital Velocity Period Centripetal Force Physics Problem

## Why Are Planetary Orbits Elliptical?

## A satellite revolves around the earth in an elliptical orbit. Its speed is