Newtons Laws of Motion

-- Momentum and centrifugal force are similar in the sense that both of them often arise

during a discussion of mechanics, kinematics, elementary newtonian physics, etc.

-- Momentum and centrifugal force are different in the sense that momentum exists,

can be measured, has magnitude and direction, and is conserved, whereas centrifugal

force is entirely fictitious and non-existent.

The first law deals with forces and changes in velocity. For just a moment, let us imagine that you can apply only one force to an object. That is, you could choose push the object to the right or you could choose to push it to the left, but not to the left and right at the same time, and also not up and to the right at the same time, and so on.

Under these conditions the first law says that if an object is not pushed or pulled upon, its velocity will naturally remain constant. This means that if an object is moving along, untouched by a force of any kind, it will continue to move along in a perfectly straight line at a constant speed.

The law of inertia is associated with an object's tendency to stay at rest or in motion at a constant velocity unless acted upon by an external force. This pattern of motion is known as uniform motion or rectilinear motion.

When a person is sitting still in a chair, the action and reaction forces meet along his bottom.

The 'action' is directed downward and is the person's weight, the result of the gravitational

attraction between the Earth's mass and the person's mass. The 'reaction' is directed upward,

and is the force developed in the structural materials of the floor and the chair.

Since the action and reaction forces are equal and opposite, the net force on the person's

bottom is zero, and he does not accelerate vertically.

It would use less electrical energy to burn the 60 watt light bulb for 900 seconds. This is because the total energy consumed is calculated by multiplying the power (in watts) by the time (in seconds), so for the 60 watt bulb: 60 watts * 900 seconds = 54,000 watt-seconds, and for the 100 watt bulb: 100 watts * 500 seconds = 50,000 watt-seconds.

Action-reaction forces refer to Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. This means that whenever one object exerts a force on a second object, the second object exerts an equal and opposite force back on the first object. These forces always occur in pairs and act on different objects.

Newton's first law states that an object at rest will remain at rest unless acted on by an external force, and an object in motion continues in motion with the same speed and in the same direction unless acted upon by an external force. A hovercraft will continue in motion until air friction (an outside force) stops it. Or if the hovercraft is no longer powered friction will stop it and it will simply float on the water (remaining at rest) once it enters a state of rest.

There's no such thing as a balanced force or an unbalanced force.

If the entire group of all the forces on an object is unbalanced, then the object
undergoes acceleration, or its "motion changes". If the group of forces on it is
balanced, then its motion doesn't change.

Yes, the law of inertia states that an object will remain at rest or continue moving at a constant velocity in a straight line unless acted upon by an external force. This is also known as Newton's first law of motion.

Both the orbit of the Earth around the Sun (revolution) and its spin (rotation) are remnants of original forces during the formation of the solar system. The forward motion of the Earth causes it to continue around the Sun despite being constantly pulled by the Sun's gravity. All the planets have this orbital motion.

The spin of the Earth is due to momentum remaining from the eddies of spinning matter that agglomerated into the planet. Gravity from the Sun, the Moon, and other planets can affect the spin and orbit, but there is virtually no friction in space to slow it down.

Yes, Newton's laws of motion are applicable to the human body. For example, when walking or running, our body experiences forces in accordance with Newton's laws, such as the third law of motion which states that for every action, there is an equal and opposite reaction.

force of gravity between two objects is

F=GMN/R(SQUARE)

WHERE F IS THE FORCE , G IS THE UNIVERSAL GRAVITATION CONSTANT , M AND N ARE THE MASSES OF THE TWO BODIES AND R IS THE SHORTEST , PERPENDICULAR DISTANCE BETWEEN THE TWO BODIES

Newton's first law of inertia states that an object in motion stays in motion unless acted upon by an external force. This principle is commonly observed in sports, where athletes must exert force to overcome inertia and accelerate or change direction. For example, a baseball player must exert force to throw a ball and a soccer player must exert force to kick a ball in order to overcome inertia and set the object in motion.

The net force in the east-west direction is 0 N as the forces cancel out. In the north direction, the net force is 5 N upwards.

The work done on the chair is calculated by multiplying the force applied (30 N) by the distance moved (9 m) and the cosine of the angle between the force and the direction of movement. Since the force is horizontal and the chair is moved horizontally, the angle is 0 degrees. Therefore, the work done is (30 N) * (9 m) * cos(0) = 270 Nm = 270 J.

It points to the law of linear conservation of momentum, the total momentum after collision is the same as before the collision, say each car including driver has a mass of 200 kg, car A is moving at 5 metres / second, car B is stationary. Momentum of the moving car makes up all the momentum prior to collision and is = mass * velocity = 200 * 5 = 1000 kg.m/s, assuming an elastic(or perfect) collision, in which no energy is lost as heat or noise, the momentum after the collision will still be 1000 kg.m/s, but the mass will have increased to 400 kg (total of both cars), so the equation after collision:

1000 = 400 * velocity, velocity = 1000 / 400 = 2.5 metres / second

The net force is 20 N push on you from the left.

If there are no other forces on you, then you'll accelerate toward the right,

just as if there were only one force of 20 N from the left on you.

Your acceleration will be 20/your mass meters per second2.

Your speed, velocity, momentum, and kinetic energy will all grow continuously.

When the parachutist opens the parachute, the air resistance force will increase. This will reduce the net force acting on the parachutist, causing a decrease in acceleration over time. As the parachute slows the descent, the net force continues to decrease until the parachutist reaches a terminal velocity.

The law of gravity is not one of Newton's laws of motion. Newton's laws of motion include the first law (inertia), second law (force equals mass times acceleration), and third law (action and reaction).

To calculate the velocity of a moving object, you divide the change in its position by the time it took for that change to occur. The formula for velocity is velocity equals displacement divided by time taken (v = d/t). The resulting value will have units of distance traveled per unit of time (e.g. meters per second).

The force that you exert on the Earth is equal to the force that the Earth exerts on you; for every action there is an equal and opposite reaction, so says Newton. What is different is the amount of motion that results. You move, and the Earth (apparently) does not. Actually the Earth is moving all the time, in its orbit around the sun and by rotating on its axis, but it does not noticeably move because you jump on the ground. And that is indeed because it is much more massive than you are.

False.

Inertia is the tendency of an object to maintain its state of rest or uniform motion unless acted upon by an external force. This concept is fundamental to Newton's First Law of Motion, which states that an object will remain at rest or in uniform motion unless a net external force is applied to it. In other words, inertia is the reason why objects resist changes in their motion.

Newton's second law of motion (F=ma) highlights the relationship between the force acting on an object, its mass, and its acceleration. In daily life, this law can be observed when pushing a heavy object requiring more force to accelerate it compared to a lighter object. It also explains why larger vehicles require more force to accelerate than smaller ones.

Newton's third law states that for every action, there is an equal and opposite reaction. In the context of forces represented by arrows, if one arrow represents a force acting on an object, then there must be another arrow representing an equal and opposite force acting on a different object. These two forces are a pair of action-reaction forces as described by Newton's third law.