Newton's first law, which dictates that objects will maintain their current states of stillness or motion unless acted upon, affect rockets in two ways.
First, it establishes the need to exert a massive force to get a rocket off the ground: not only to simply get moving but also the overcome the force of gravity being exerted on the rocket while on the ground.
Second, it explains why rockets do not need so much thrust once they do get into space. According to the first law, as long as the rocket doesn't have to alter its speed or direction, it doesn't need to exert any more force. This is why space-bound vessels are calculated on such careful trajectories--to allow for their natural tendencies of motion to carry them to their destinations.
Newtons (N) It was first thought of by sir issac newton > The force acts equally on both objects, and is rated in newtons.
The net force applied downward to the ground is 450 newtons + W newtons. When standing still (not accelerating), the net force must be zero according to Newton's first law. This means the force pushing down must be balanced by the force pushing up (from the ground).
73 kilograms x 9.8 newtons per kilogram (gravity pulling down on the surface of the earth) = 715.4 newtons +++ You cannot convert units of mass into unit of force. The question is based on a misunderstanding, but as the first answer hints, the force applied by a 73kg mass is 715.4N only on Earth. It will be about 112N on the Moon, roughly.
Newton's first law of motion applies in this scenario. The rock that gets stuck while the plate is subducting into the mantle remains at rest until an external force acts upon it, in this case, the force from the movement of the tectonic plate.
First of all, you should understand that force and mass are quite different things; in many cases it DOESN'T MAKE SENSE to convert one from the other. In the following special case, you can do a conversion: if you assume measurements near the Earth's surface, a mass of 1 kilogram is attracted with a force of 9.8 newtons. So, if you know the weight in newtons, you can divide that by 9.8 to calculate the mass in kilograms.
Its a matter of being scientifically rigorous. You can not claim the 2nd law as a law unless you first establish the first law.
It all depends on the fuels available energy, the mass of the craft, and any force the craft may have to overcome (see Newtons second law of motion). Also, although it'd take a while one could conceivably cross the entire universe on one gallon. As long as nothing counteracts the force of the propellant the craft will never stop (see Newtons first law of motion).
The first rockets were used to create colorful and breathtaking displays in the sky,visible by large numbers of people.They were developed in China several Centuries ago, and are still in use. We call them "fireworks".
a rocket does not have a nose.......
yeah.
The first rocket of India was named Nike Apache, which was launched on November 21, 1963. It was a sounding rocket that was launched from Thumba Equatorial Rocket Launching Station (TERLS) in Thumba, Kerala.
The first rocket launched as an attack was the V1 rocket, nicknamed "doodlebug
China created the first rocket. They are known now as fireworks.
the first rocket (the V2) was launched in 1942.
The rocket that took the first man to the moon was the Saturn V rocket.
the first rocket was made by the Chinese. Of course this the first rocket. They used it to scare their enemies away hope this helps. =]
The Rocket Boys launched their first rocket in the town of Coalwood, West Virginia. The rocket was launched in a field known as Big Creek Missile Agency, which they set up themselves.