Newtons Laws of Motion

this case is observed when you throw a ball at a wall.the ball comes to momentary rest after after striking the wall.but it experiences a retarding force.at that time the retarding force is non zero,so acceleration is non zero.but velocity is zero.same is the case when you throw an object up into air.there is constant acceleration of 9.8m/s^2 but at the top of trajectory the velocity is zero.

Yes, the thrust on the rocket remains constant in the absence of gravitational force. Thrust is the force pushing the rocket forward, generated by the propulsion system. It is independent of gravitational force.

Yes, that statement is a concise way of expressing Newton's second law of motion. The net force acting on an object is indeed equal to the rate of change of its momentum. This relationship helps explain how forces cause objects to accelerate or change direction.

Yes, a force acting perpendicular to a horizontal force on a body can cancel out the horizontal force if the two forces are equal in magnitude and opposite in direction. This is known as the equilibrium condition, where the net force acting on the body is zero.

Kinetic energy is the energy an object possesses due to its motion, whereas potential energy is the energy an object possesses due to its position or condition. The interplay between kinetic and potential energy is often seen in systems where one can be converted into the other, such as a swinging pendulum where potential energy is converted into kinetic energy and back again. Both forms of energy are essential in understanding the behavior and dynamics of physical systems.

it will recoil and the direction will reverse, i don't think there is a specific name for this type of energy besides the fact that it pertains to the law of motion that for ever action there is a counterpart reaction.

why dont you go ask your mommy but ill still tell you these trash low standard questions.THE FORCES OF ACTION ARE TOO COMPLICATED BUT THEY CAN BE DINE LIKE THIS GOING THROUGH A ROAD AND going through all the other tensions of life but they can be rid by eating emami healthy and tasty tata tea and by having 30 or more fingers on your head as you are nothing but a headache.

Yes, that is correct. Inertia is the property of matter that resists changes in its state of motion.

its so called.......coz...intially...we press the accelerator with a little breaks in the second or third gear..........and this has to be done correclty in between a normal drift......................which is very very difficuly to perfom and to understand..... just know the concept...........dont think too much...u wont understand it anyway ....untill unless u r a professional racer and modifier like Michael Schumacher

yes.

edit:

No. Action-reaction forces produce the same magnitude of FORCES. This is the reason why you can walk. Your foot pushes against the ground with a force of X. The ground will simultaneously push back with a force of X. This is what propels you. There are two objects in this motion, you and the earth. You may weigh a few hundred pounds so the force that is exerted upon you propels you upward/forward. The earth ways countless (not actually countless) tonnes, so it's acceleration is minor

Fyou=myou*ayou

Fearth=mearth*aearth

mearth >>>> myou

Fearth = Fyou

myou*ayou=mearth*aearth

Therefore the acceleration on the earth is much lower (ie accelerations are of different magnitude)

The photoelectric effect was the observation that gave the first hint that Newton's laws did not apply at the atomic level. This led to the development of quantum physics because it showed that light can behave both as a wave and a particle, which could not be explained by classical physics. Quantum physics emerged to provide a more accurate description of phenomena at the atomic and subatomic levels.

Action and reaction forces have the same magnitude but act in opposite directions. This is described by Newton's third law of motion, stating that for every action, there is an equal and opposite reaction.

The amount of horizontal force required to start in motion an object sitting on a horizontal surface must be greater than the force of static friction acting on the object. This is because the force of static friction opposes the applied force until the object starts moving.

for lifting the object there is no role of friction,but of air friction.since no info,. is given about it so air friction = 0.thereby for lifting we have mg = mass * 9.8 (the wight of the object). and for sliding we have 0.3*mg . therefore 0.7mg of more force is required to lift it.

The net force acting on the block is the difference between the applied force and the frictional force: 12 N - 0.65 N = 11.35 N. Using Newton's second law (F=ma), we can find the acceleration: 11.35 N / 85 kg = 0.133 m/s^2.

Newton's Second Law of Universal Dynamics.

Force is directly proportional to acceleration. F = ma

Where 'm' is the mass of the bodt being forced.

Newton's two other laws of Universal Dynamicsare : -

1. A body(mass) will remain stationary or in uniform (straight line and speed) motion, unless acted upon by a force.

2. To every forcethere is an equal and opposite force.

Gravitational force attracts every massive particle to every other massive particle. It does so by altering the space between the objects, where each particle causes a small gravitational well. Frictional force is caused by the intermolecular attraction between two very close objects.

The main difference between these two forces is their dependence on distance between the objects. Gravitational force is inversely proportional to the square of the distance, classifying it as a long distance force. Conversely, frictional force depends mostly on London Dispersion/ forces, which has a magnitude that is inversely proportional to the distance to the sixth power. This is more clear in the equations modeling these two interactions:

FG=Gm1m2/r2 FL=k/r6

Where FG is the force of gravity and FL is the London force

G is the gravitational constant (6.674x10-11N(m/kg)2)

m1, m2 are the masses of the respective massive bodies

r is the distance between the respective bodies

k is a constant that depends on the polarizability and the ionization energies of the two bodies (in normal conditions other factors would have to be considered in this constant, but for an approximation this is sufficient).

Frictional force, unlike gravitational force, can be changed by the application of an external force perpendicular to the direction of the frictional force. Frictional force experienced by an object is equal to the product of the coefficient of friction (influenced by FL, shown above) and the normal force. Therefore, by changing the normal force (defined at the contact force perpendicular to the surface on contact, it keeps the object from falling through the surface) the frictional force can be changed. An intuitive example is moving a couch: the frictional force is much greater when there is someone sitting on it, increasing the normal force.

When a force acts on an object, it can cause the object to accelerate, decelerate, or change direction. The object's motion is determined by the magnitude and direction of the force applied to it, in accordance with Newton's second law of motion.

This is an example of Newton's second law of motion, which states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. This law is represented by the equation F = ma, where F is the force applied, m is the mass of the object, and a is the acceleration.

Newton's 1st law states that an object will remain at rest or in uniform motion unless acted upon by an external force. In the clean and jerk, this law applies during the clean phase where the lifter accelerates the barbell from the floor to the shoulders by exerting force to overcome inertia. In the jerk phase, the law comes into play when the lifter applies force to lift the barbell overhead against gravity.

"For every action, there is an equal and oposite reaction."

The cannonball is pushed out of the barrel at high speed. This pushes the cannon in the opposite direction. That is recoil. The heavier the cannonball, and the faster it is pushed, the more the cannon recoils.

The law that describes the acceleration of an apple falling from a tree is Newton's Second Law of Motion. This law states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass.

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