Newtons Laws of Motion

Yes, momentum is a conserved quantity in closed systems where no external forces act. This means that the total momentum before an interaction is equal to the total momentum after the interaction. This principle is known as the law of conservation of momentum.

Yes, Newton's first law states that an object will remain at rest or in uniform motion unless acted upon by an external force. This law is often associated with inertia, which is the tendency of an object to resist changes in its motion.

There is no problem in this case from Newton's third law because the collision is not happening instantly.

During the collision the mud is flattened and slowed by a reactive force from the wall (according to the third law) and the kinetic energy that is lost is converted to heat in the wall and the mud and also the deformation of the mud.

After the collision no speed remains and the mud sticks to the wall. The problem is that you forgot to consider the time of the collision and that the mud itself is not a rigid object; it can absorb energy.

Similarities:

1. All three laws describe the relationship between an object's motion and the forces acting on it.
2. They apply to all objects, regardless of their size or speed.

Differences:

1. The first law (inertia) states that an object at rest stays at rest unless acted upon by a force, while the second law (F=ma) describes how the acceleration of an object is related to the net force acting on it.
2. The third law (action-reaction) states that for every action, there is an equal and opposite reaction force, highlighting the interaction between two objects.

An object traveling in one direction can be accelerated in another direction by applying a force in the desired direction. This force will cause the object's velocity to change, leading to acceleration in the new direction. The acceleration will depend on the magnitude and direction of the force applied.

A speeding missile, or any moving object, has momentum. Force was used to cause it to move in the first place. If this object strikes another object, it will then exert a force on the object that it strikes.

When an object is in motion, such as a falling pencil, it posseses energy, there fore something must absorb it's energy to stop it to a rest. (example- a car in motion stops by the brAke absorbing it's energy). But energy is never destroyed or created, it can only be transferred from one form to another (example- the cars brakes heat up when used because the cars energy is being transferred to heat energy). So, the instant the falling pencil strikes the ground, it stops

falling correct? But the energy the previously falling pencil possess must be transferred to another form of energy the energy can't be

"lost" right? So what happens is some of the energy is converted to heat when it strikes the ground, you may not believe it but there is heat when it hits the ground because of friction. Furthermore, some of the energy is also converted to sound energy. (the pencil makes a sound when it hits the ground and sound is energy) but the heat and the sound energy combined is not enough to transfer all of the energy of the falling pencil. So where does this little extra energy go? You guessed it! Back up! It hits the ground, it goes back up because not all of it is transferred to another form such as sound or heat so it must go back up- or as you said, bounces. Hope this helped you understand.

When two bodies attract each other the larger one exerts the larger force because it contains more matter. Every particle of matter in the Universe is attracting every other. So the Earth exerts the stronger force on the Moon. The Space explorers have shown that on the Moon they weigh about one sixth of what they weight on Earth.

Yes, it is possible for the impulse of force to be zero even if the force is not zero. This can happen if the force is applied for such a short period of time that the area under the force-time graph, which represents impulse, is zero.

Newton's laws of motion are made when thinking that the objects are in a vacuum.

Living on Earth, we have an atmosphere (air).

So the atmosphere will interrupt all the objects tested.

For example, when throwing a ball in space, the ball will continue on forever, because there is nothing to disturb it. Until off course something does disturb it, like a meteor or a black hole.

But throwing a ball here on Earth, it will only fly for a bit. There is the air that will cause friction and make it slow down (even though it is very small) and most important of all, gravity.

newton said that if no external force act upon any moving object than it will move through out.. but in actual world .. there are lot of external forces.. and those are frictional forces.. so newton first law holds..

The weight (or mass) of the body affects the force needed to propel it through the air. A heavier body requires more force to achieve the same speed as a lighter body. Additionally, air resistance increases with speed, so a heavier body may experience greater resistance at higher speeds.

mass(kg) = force(n)/acceleration(m/s^2),

mass =1000/9.81

mass = 101.94 kg

We're not aware of any [non-relativistic] situation in which it appears to fail.

We'd appreciate the questioner coming back and describing one, for discussion.

What do you mean by "high speed" ? In what way does the formula not work ?

Work done by a force (W) = Force (F) x distance (m)

W = 22 x 18 = 396 Joules

According to the law of conservation of Energy, the total energy of a closed system is constant, but can change from one type to another.

Therefore, the work given to the object must be converted into the kinetic energy of the object.

So,

Increase in Kinetic energy = work done = 396 Joules

You can't, unless you know both of their directions.

-- If they're in the same direction, then the net force is 10N in that same direction.

-- If they're in opposite directions, then the net force is zero, and the direction

doesn't matter because there's no net force.

-- Depending on their directions, those two forces can combine to produce a

net force of anything between zero and 10 N, in any direction. So you need to

know their directions in order to figure out what the net force is.

Yes, an object can be in equilibrium if it is acted on by two forces that point in mutually perpendicular directions. This is known as mechanical equilibrium, where the vector sum of all the forces acting on the object is zero, and the object does not accelerate.

Since the bed is uniform we can assume that each leg carries exactly 1/4 the total force. Force is equal to mass times the acceleration of the object. The bed, hopefully being at rest, is only effected by gravity. So its acceleration is 9.8 m/s2 downward.

F = 45Kg * 9.8 m/s2

This will give you an answer in Newtons (Kg*m/s2) then divide by 4.

If a net force of 5 N acts on a hockey puck, it will accelerate according to Newton's second law (F=ma), where F is the force, m is the mass of the puck, and a is the acceleration. The puck will move in the direction of the force, increasing its velocity over time as long as the force continues to act on it.

Momentum is mass multiplied by velocity. The formula for momentum is: p (momentum)= m (kg ) x v (meters/second). So in this case, the mass is 9000 kg and the velocity is 3 m/s, so its momentum is 27000 kg-m/s, or N-s.

The law of motion, particularly Newton's first law of motion, states that an object in motion will continue in motion unless acted upon by an external force. This has implications for safety and protection in that it emphasizes the need for seat belts, airbags, helmets, and other protective gear to prevent injury during sudden stops or impacts. Understanding this law can also help design safer vehicles and structures to better withstand external forces.

Yes, it is possible for a body to have zero velocity while experiencing non-zero acceleration. This occurs when the body is changing direction but not speed, such as in circular motion. Another example is when the body is momentarily at rest at the peak of its motion, like a ball thrown upwards.

That is difficult to answer in that a horizontal force may be perpendicular to the body. So, the question does not differentiate between "can a vertical force cancel a horizontal force?" and "can a horizontal force cancel a horizontal force?" The best answer is, yes: two opposite and equal horizontal forces, both perpendicular to a body, will cancel each other.

Frictional force depends on the nature of the surfaces in contact and can vary based on surface roughness, temperature, and the presence of lubricants. It does not depend on the surface area in contact but relies on the normal force acting between the surfaces. Frictional force can also generate heat and wear on the surfaces in contact, leading to energy loss and decreased efficiency in mechanical systems.

Yes, it is possible for the average velocity of an object to be zero during a given interval even if its average velocity for the first half of the interval is not zero. This can occur when the object moves in opposite directions such that the distances traveled cancel out over the entire interval. For example, if an object moves 3 meters to the right and then 3 meters to the left in equal times, its average velocity for the entire interval would be zero.

If we take this simply, we can manage it. Let's take it one law at a time. First, inertia. Bodies at rest tend to remain at rest and bodies in motion tend to remain in motion. And both of those are in effect unless the body is acted upon by an outside force. For the glider, it is going to need to have some force applied for it to start flying (gliding). It will also be subject to some pretty complex forces when flying. Gravity is pulling down, and aerodynamics is supplying lift and the shape of the thing will engender drag (or "friction moving through the air" if you like). When air moves in a nonuniform way around the glider or when the control surfaces are used, things happen. There is a lot of stuff going on that has to do with inertia in a flying glider. It's inertial moment changes every microsecond (or less) as it is flying and interacting with the air. The second law of motion, that a change in motion is proportional to the force acting on a body, is tied to the first one. It takes a certain amount of force to get the mass of the glider moving to make it start to fly (or glide). The amount of force is proportional to the mass of the glider, and the more massive the glider, the more force is required to get it going. Same with changes in flight. The more massive the glider, the more force the control surfaces will have to effect to change the course of the thing. And smaller irregularities in air flow will have little affect on a more massive glider while they will affect a small, light glider more noticeably. Lastly, for every action there is an equal and opposite reaction. When a glider is in flight, any movement of the glider will move some volume of air in a given direction with a given amount of force to cause the glider to stay aloft or to change direction. When the glider pushes on air to maneuver, the air will "push back" on the glider and/or its control surfaces. Certainly it is pushing up on the underside of the wing to give the glider lift, and the air is being pushed down with equal force. Newton's laws of motion can be reviewed by using the link to the article on them posted by our friends at Wikipedia, where knowledge is free.