Q. Which object will have the greatest acceleration if acted upon by a net force of 100 N? inertia.

inertia

Answer: An object having 3kg is the most difficult to accelerate.

Even in space objects have mass. And if they have mass, they have inertia. That is, an object in space resists changes in its state of motion. A force must be applied to set a stationary object in motion.

The tendency of an object to resist a change in velocity is known as the object’s inertia. For example, a train has significantly more inertia than a skateboard.

Originally Answered: What would happen if there was no inertia? Objects would stop moving as soon as there was no longer any force being applied to them. The Earth would stop spinning, light wouldn’t move, and particles would fall apart.

Inertia causes a moving object to stay in motion at the same velocity (speed and direction) unless a force acts on it to change its speed or direction. It also causes an object at rest to stay at rest.

The Sun

Surprisingly, horizontal impulses changed substantially more with weight than with mass. Gravity exerted a greater influence than inertia on both vertical and horizontal forces generated against the ground during running.

Explanation: If we think of the earth as a solid sphere rotating about its center, the moment of inertia is given by: I=25MR2.

There are two forces that keep the planets in their orbits.

• Gravity. Gravity is the primary force that controls the orbit of the planets around the sun.
• Inertia.
• Gravity Working with Inertia.
• Velocity and Gravity.

Comets are several miles in diameter, composed of rock, ice and other organic compounds, making them “dirty snowballs” in space, according to NASA’s near earth object program. They originate outside the orbit of the outermost planets and form elliptical orbits that pass close to the sun.

Planets can’t be in just any orbit, they have to be far enough apart so that they don’t hit each other, and aren’t drawn into collision by gravity.

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.

Explaining orbits 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).

Do satellites stay in orbit forever? Well, mostly not – it depends on which orbit we’re talking about. The orbit will tend to shift over time but it will stay orbiting the Earth in the same way that the Moon still orbits the Earth after millions of years.

3,000 dead

There have been no observed collisions between natural satellites of any Solar System planet or moon. Collision candidates for past events are: The objects making up the Rings of Saturn are believed to continually collide and aggregate with each other, leading to debris with limited size constrained to a thin plane.

There is no way a satellite could stay in orbit indefinitely.

A satellite launched in the 1990s was designed to operate for an average 12 years, a life expectancy that by the 2000s increased to 15 years. Many continue to operate for 18 years or more, but 15 remains the prevailing design life.

gravitational pull

The aerodynamic drag on small satellites in Low Earth orbit can be used to change orbits slightly to avoid debris collisions by changing the surface area exposed to atmospheric drag, alternating between low-drag and high-drag configurations to control deceleration.