Newtons Laws of Motion

Yes, and walking itself is the cause of those forces. Your action force is taking a step, and the reaction force is your body moving forward are backward, depending on which way you are walking.

The object must be in equilibrium to be at rest or a constant speed.

No, an object in a vacuum does not experience buoyant force because there is no surrounding fluid to displace or exert an upward force on the object. Buoyant force is a phenomenon that occurs in fluids, such as air or water, and is responsible for objects floating or sinking.

Meteors are pieces of rock, ice or other debris from outer space that fall into the earth's atmosphere. Meteorites are the remnants of those objects that manage to make it all the way to the earth's surface without burning up.

The earth rotates and also undergoes revolution and is therefore classified as a moving object.so the plants and building on earth cannot be at rest and must also be state in motion, with respect to the sun and heavenly bodies, then it is called absolute rest.

The acceleration of the object would be approximately 5 m/s^2. This is calculated using Newton's second law, F=ma, where F is the force of gravity (100N), m is the mass (20kg) and a is the acceleration.

Friction is often seen as a hindrance to motion because it opposes the movement of objects by creating resistance. It can slow things down, decrease efficiency, and cause wear and tear on surfaces in contact. While friction is necessary for many everyday actions, excessive friction can be considered undesirable in some situations where smooth, unhindered motion is desired.

There's no way to know, all you can say is that the upward friction force = 98,1N, and thus that the static friction coeff is bigger than 98,1/100=0,981.

To know the static coeff, you should gradually make the horizontal force smaller and see when the block falls down.

As for the kin. coeff, you should know the acceleration at which it is falling down.

The terminal velocity of a 15lb watermelon falling from 40m up will depend on factors such as air density, shape of the watermelon, and air resistance. On Earth, a typical terminal velocity for a watermelon would be around 30-50 m/s, but this can vary based on the specific conditions of the fall.

If the surface is smooth then it is almost frictionless. Hence the body will continue to move with constant velocity. However the object continues in a circular path and the weight is thus the centripetal force. It is assumed that the surface is very large)

At 180 degrees the net force is at a minimum; the two are working against one another.

The maximum frictional force acting on an object is found by the equation F = Fn * Fs, where Fn is the normal force acting on the object (by Newton's 3rd Law, Fn can equal the body's weight in magnitude) and Fs is the static friction property of the surface, usually determined by experiment or given. If the body is already in motion, F = Fn * Fk, where Fk is the kinetic friction. This is also a property of the surface determined by experiment. It is usually significantly less than the static friction. (This is why it is easier to push a heavy crate across the floor once you start to move it.) Example: The static friction of a desk is determined by experiment to be .5. What is the required horizontal force to be applied to a 10 N book in order to move it? 1) To move the book, the applied force must exceed the maximum frictional force acting on it. so Fapp > F. 2) Find F. F = Fn * Fs. F = (W of book)(.5) as Fs is given to be .5. By Newton's third law, the weight of the book equals the normal force on it from the desk. F = (10 * .5) The frictional force = 5 N. Therefore, you must apply a force greater than 5 N horizontally.

The force of kinetic friction acts in the direction opposite to the direction of an object's motion. This frictional force works to resist the movement of an object over a surface, causing it to slow down or come to a stop.

There is no such thing as 'an unbalanced force', any more than a trouser,

a scissor, a tweezer, or a clapping hand.

A group of two or more forces is balanced if the vector sum of all of them

is zero, or unbalanced if it's not.

When a group of two or more forces is unbalanced, then the object they

act on exhibits acceleration.

No, victors are not a measure of friction on an object. Victors are a type of motor controller commonly used in robotics and automation to control the speed and direction of motors. Friction, on the other hand, is the force that opposes the motion of an object when it is in contact with another object.

Friction is a force that always acts in a direction opposite to that of motion. So the frictional force does negative work on the velocity of an object ( thus reducing the speed of an object).

The law of ineritia dictates that it will keep on going its course if no force acts upon it.

Of course this is only vaild in a static frame of reference, if the observer is accelerating at the same time then the object even know nothing is acting upon it will according to the observer accelerate without an apparent force acting on it.

But to sum up in layman's term no it won't do anything.

an external force. This law is also known as the law of inertia and it describes the tendency of objects to maintain their state of motion.

a book kept on a table. no change in its state of rest unless some external force applied.

however in case of moving bodies no such easy example's there as friction always supplies the retarding force ultimately bringing body to rest.

Inertia is the reluctance of a body at rest to start moving or a body in motion to come to rest. In this case Inertia prevents the ketchup from flowing.

That is why removing/getting it out of the bottle is effective in this way:

1) Hold it by the neck

2) Turn it upside-down (cap ON please)

3) Swing it in this position towards the plate

4) Jerk it to a stop quickly right before it hits the plate

The ketchup will continue flying towards the other end, even though the bottle has stopped. This is because the innertia (or tendency of an object to stay in its current state of motion, at rest or in motion) keeps it moving even though the bottle has stopped.

This is a neat way to do it if this is you Physics Homework for the day, cheaters!

Newton's Third Law states that if object A (let's call it the cue ball) exerts a force on object B (let's call it the eight ball), then the eight ball will exert an equal and opposite force on the cue ball.

If the cue ball is in motion and heads toward the eight ball which is in motion toward the cue ball, they will collide. Both balls will exert the same amount of force on each other, but in opposite directions (Newton's 3rd law). Since both balls have the same mass and have the same magnitude of force acting on them, they will both accelerate at the same rate (this is actually now entering into Newton's 2nd law). a=F/m

An object moves with constant velocity when there is no net force acting upon it. If there are no forces acting on an object, or if the forces acting on it "cancel out" leaving a net force of zero acting on the object, it will have zero acceleration. With a zero acceleration, the velocity of the object will be constant.

The acceleration will be 3.51 m/s². This can be calculated using Newton's second law: F = ma, where F is the net force, m is the mass of the box, and a is the acceleration. Rearranging the formula gives a = F/m. Substituting the given values: a = 85.5 N / 24.3 kg = 3.51 m/s².

The work done by the movers can be calculated using the work-energy principle. The work done can be found by multiplying the force of friction by the distance the crate was moved. The force of friction is the product of the coefficient of friction and the normal force (weight of the crate). The work done will be equal to the force of friction multiplied by the distance moved.

In softball, action-reaction forces come into play when a player throws a ball. As the player exerts force on the ball by releasing it, an equal and opposite force is exerted on the player in the opposite direction. This force helps propel the ball forward.