What would happen if a rocket were launched with a speed greater than Earth’s escape velocity?
What would happen if the Space Shuttle were launched with a speed greater than Earth's escape velocity? It would travel away from Earth into the solar system.
What property can you determine if you observe the acceleration of an object with a known mass?
Newton's second law states: sum of forces = mass × acceleration. According to this, what property can you determine if you observe the acceleration of an object with a known mass? C) the current velocity of the object. Newton's second law states: sum of forces = mass × acceleration.
Which law explains why a skater can spin faster by pulling his arms closer to his body or spin slower by spreading his arms out?
The principle of the conservation of angular momentum holds that an object's angular momentum will stay the same unless acted upon by an outside force. This explains why a figure skater spins faster when she tucks her arms in close to her body.
How does a rocket launched into space take off quizlet?
How do rockets lift off the ground? Rockets and space shuttles lift into space using Newton's third law of motion. A rocket can rise into the air because the gases it expels with a downward action force exert an equal but opposite reaction force on the rocket. any object that orbits another object in space.
When it reduces in size what happens to the escape velocity?
What happens to the escape velocity from an object if you shrink it? It increases.
What happens if a rocket does not reach escape velocity?
Most satellites and spacecraft sent into space do not reach escape velocity! Space is usually considered to start at an altitude of 100 km (this is known as the Kármán line). If a rocket goes fast enough and high enough to enter space but does not reach escape velocity, it will enter orbit around the Earth.
How does the force on a moving object affect its acceleration when the mass remains the same?
If the same force acts on two objects, the object with less mass will have the greater acceleration. For instance, if you push a soccer ball and a bowling ball with equal force, the soccer ball will have a greater acceleration. If objects lose mass, they can gain acceleration if the force remains the same.
What two factors affect the rate of acceleration of an object?
The acceleration of an object depends on the mass of the object and the amount of the force applied to it.
Why does the skater starts her rotation with outstretched limbs and increases her spin by pulling them in toward her body?
A figure skater spins, with her arms outstretched, with angular velocity of ωi. When she moves her arms close to her body, she spins faster. Her moment of inertia decreases, so her angular velocity must increase to keep the angular momentum constant.
What happens to her rotational kinetic energy when she pulls her arms in?
The work she does to pull in her arms results in an increase in rotational kinetic energy.
What would happen if the projectile were thrown with a greater velocity?
What would happen if the projectile were thrown with greater velocity. It would achieve escape velocity and fly off into space.
Is it possible to leave Earth’s atmosphere?
Any spacecraft traveling through it wouldn't notice a thing or be slowed by drag. It does mean, however, that humankind has yet to leave the Earth's atmosphere. The moon, the farthest point ever reached by astronauts, orbits well within the geocorona. All of this challenges the way we see our planet's borders.
What does escape velocity depend on?
The escape velocity depends only on the mass and size of the object from which something is trying to escape. The escape velocity from the Earth is the same for a pebble as it would be for the Space Shuttle. example #1: What is the escape velocity from the Earth?
Why escape velocity decreases with the increase of altitude?
Escape velocity decreases with altitude and is equal to the square root of 2 (or about 1.414) times the velocity necessary to maintain a circular orbit at the same altitude. At Earth's surface, if atmospheric resistance could be disregarded, escape velocity would be about 11.2 km (6.96 miles) per second.
Can you break gravity?
Yes you can. It is said that in order for an object or a projectile to leave Earth's gravitational pull, it must reach Earth's escape velocity, meaning reach a speed of 7 miles per second(~11 km per second). The speed needed for Apollo 11 to break free of the Earth's gravitational field was about 7 miles per second.
Can you jump off the moon?
Although you can jump very high on the moon, you'll be happy to know that there's no need to worry about jumping all the way off into space. In fact, you'd need to be going very fast – more than 2 kilometres per second – to escape from the moon's surface.
What happens to acceleration when force is increased?
As we increase the force on an object the acceleration increases proportionally. Since the mass does not change as the acceleration increases, we can say that force is equal to acceleration. Therefore, if you double the force you double the acceleration.
How will the force needed to move an object be affected if the mass of the object changes from 100 kilograms to 200 kilograms?
How can Macie use the least amount of force to move the boxes? How will the force needed to move an object be affected if the mass of the object changes from 100 kilograms to 200 kilograms? The force needed to move the object would be tripled.
What is the effect of the increase in mass to its acceleration?
If you increase the mass at a given force the rate of acceleration slows. Therefore, mass is inversely proportional to acceleration.
When force increases what happens to acceleration?
As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.
Does the rotational kinetic energy of a skater increase when they pull their arms in Where does the added energy come from?
The increase in rotational kinetic energy comes from work done by the skater in pulling in her arms. This work is internal work that depletes some of the skater's food energy.
What happens to the rotational inertia of a figure skater when they bring in their arms?
When the hands and legs are brought close to the rotational axis, the rotational inertia decreases thereby increasing the skaters angular velocity as per the conservation of angular momentum. Increase in angular velocity implies increase in the kinetic energy.
What causes rotational kinetic energy increase?
The energy source for the increase of rotational kinetic energy is muscle power.
What changes rotational kinetic energy?
If a rigid body is rotating about a fixed axis with angular velocity ω and a force is applied on it to increase its angular speed (and thus rotational kinetic energy), then the relation between the work done by the torque of the force and the change in its kinetic energy is predicted by work-kinetic theorem for …
How does spin affect projectile motion?
The amount and direction of spin acting on a projectile will directly affect the distance a projectile will travel. The reason for this is the air pressure acting on the ball. Example: In a tennis shot, topspin gives poorer distance compared to backspin.
What happens to the horizontal velocity of a projectile as it goes up?
The horizontal velocity of a projectile is constant (a never changing in value), There is a vertical acceleration caused by gravity; its value is 9.8 m/s/s, down, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent of its vertical motion.
Will humans ever leave Earth?
Climate change is altering our planet, and some have wondered if we may have to leave Earth to another distant planet. We will never escape climate change, and unfortunately, we will never leave the Solar System, and Earth may be our home forever. The Alpha Centauri system is the closest system to us.
How cold is space?
In fact, it doesn't actually have a temperature at all. Temperature is a measurement of the speed at which particles are moving, and heat is how much energy the particles of an object have. So in a truly empty region space, there would be no particles and radiation, meaning there's also no temperature.
How does radius affect escape velocity?
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. Notice also that the escape velocity formula looks a lot like the law of gravity, as you might expect.
Does escape velocity change with altitude?
Escape velocity decreases with altitude and is equal to the square root of 2 (or about 1.414) times the velocity necessary to maintain a circular orbit at the same altitude. At the surface of the Earth, if atmospheric resistance could be disregarded, escape velocity would be about 11.2 km (6.96 miles) per second.