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Newtons Laws of Motion

The three laws proposed by Sir Isaac Newton to define the concept of a force and describe motion, used as the basis of classical mechanics.

1,508 Questions

What is the net force on a car with mass of 1200 kg if its acceleration is 20 m?

The net force on the car can be calculated using Newton's second law, F = m * a, where F is the net force, m is the mass of the car (1200 kg), and a is the acceleration (20 m/s^2). Therefore, the net force on the car would be 24,000 N.

Can newton first law be deduced from the second law?

Yes, Newton's first law can be deduced from his second law. Newton's first law states that an object in motion stays in motion, and an object at rest stays at rest, unless acted upon by an external force. When applying the second law (F=ma) to an object with no external forces acting on it (F=0), we find that the acceleration (a) is zero, which means the object continues in its current state of motion, as described by the first law.

Is speed the rate of time in distance?

No. A distance divided by a speed is a time, not a speed.

If you want to get the average speed, you have to divide the total distance by the total time.

No. A distance divided by a speed is a time, not a speed.

If you want to get the average speed, you have to divide the total distance by the total time.

No. A distance divided by a speed is a time, not a speed.

If you want to get the average speed, you have to divide the total distance by the total time.

No. A distance divided by a speed is a time, not a speed.

If you want to get the average speed, you have to divide the total distance by the total time.

What happens to momentum when an impulse acts on a system?

Strictly speaking, you would say that a force acts on a system and the impulse of that force corresponds to the change in momentum of the system due to the action of the force. More mathematically, the impulse of a force is defined as the integral of that force with respect to time over the time period that the force acts.

What is the unit of measurement in calculating the ship total resistance?

The unit of measurement commonly used for calculating ship total resistance is Newtons (N). Total resistance is the sum of different types of resistance a ship faces while in motion, such as wave-making resistance, viscous resistance, and appendage resistance.

What has more inertia a large truck or a small car?

A large truck typically has more inertia than a small car because inertia is directly proportional to an object's mass. The greater mass of the truck means it will resist changes in its state of motion more than the smaller car.

How does a catapult demonstarte newton's second law of motion?

A catapult demonstrates Newton's second law of motion by showing how the acceleration of the projectile (object being launched) is directly proportional to the force applied by the tension in the catapult's arm (F=ma). This means that the larger the force applied to the arm, the greater the acceleration of the projectile, leading to a more powerful launch.

Which task requires more effort pushing a 1-kg box across an ordinary floor or pushing a 2000-kg box across a frictionless floor?

If there is no air resistance moving the 2000-kg box would cost virtually no effort since the slightest shove would set it into motion which it would continue indefinably.

Pushing the 1-kg box would require a constant investment of effort because you need to combat the force of friction.

Thus, pushing the 1-kg box around is more tiresome.

In the case of Newton's Cradle it is known that once set in motion the balls will eventually stop moving Why?

The reasons are the same as they are for any similar oscillatory system. It is largely because energy is dissipated as heat wherever there is friction: at the ends of the strings and where the balls collide. Hence the total amount of energy within the system falls until the oscillation is no more. Wherever there are resistive forces, there can be no perpetual motion without violating the Conservation of Energy principle.

How is newton's law related to satellite orbit?

Yes of course. The gravity is the one responsible for keeping the satellite in place. But hold your horse how can that be possible. If the gravity was the only force acting then the satellite should start moving in a spiral fashion thereby crashing down on the earth surface. Here we see the action of something called the centrifugal force which is one of the famous pseudo forces.

Now what is a pseudo force? Well these are the forces which does not exist in reality. It is something which you assume to exist to counter balance the other force that is keeping you spinning called the centripetal force(like gravity in case of satellites). Even you feel this force like when you're standing inside a bus and the bus takes a sharp turn and you tilt the other way.

What are some ways to experience weightlessness?

You can experience weightlessness by taking a parabolic flight, where the plane rapidly ascends and descends to create short periods of simulated zero gravity. Another option is to visit an astronaut training center where they offer zero-gravity simulators. Lastly, space tourism companies like SpaceX and Blue Origin are developing commercial trips to space where passengers can experience weightlessness.

Explain using Newton's second law Why can you throw a golf ball further than a bowling ball even though you throw both at the same angle and with the same amount of force?

both will have same kinetic energy ,so forward velocity will be lower for bowling ball , the time to go up then down to the ground under gravity will be the same for both, so distance = velocity * time , so lighter (golf)ball will travel further because its velocity is higher

second thoughts,

assume launch angle same for both, ball with greater launch velocity will travel further. (laws of ballistics)

if work done on ball (f * d) is same on both , the lighter ball will have greater launch velocity, though both will have same kinetic energy at launch

How do they differ higher and lower displacement engines?

taking one cylinder , area of bore * length of stroke gives displacement (or volume) of one cylinder , then * number of cylinders = total engine displacement

for rough power calculation you can research the equation

PLAN/33000

What is A force produces an acceleration of 0.5 m s2 on a body of mass 1 kg What is the acceleration if the same force acts on a body of mass 2 kg?

The force produces an acceleration of 0.5 m/s^2 on a body of mass 1 kg, so using Newton's second law (F=ma), the force is 1 * 0.5 = 0.5 N. When the same force acts on a body of mass 2 kg, the acceleration will be 0.5 N / 2 kg = 0.25 m/s^2.

When does a mass accelerate uniformly?

A mass accelerates uniformly when a constant force is applied to it, resulting in a constant rate of change in velocity over time. This occurs in scenarios where there is no opposing force or acceleration due to factors such as friction, air resistance, or gravity.

How is newtons third law shown in every day life?

1. As you walk, newton's third law is inherent in it. First you lift your say right leg and put it forward. Now your weight will be totally acting on the left leg. Now you push the earth with your left leg. This is action. Then equal and opposite reaction makes you to move forward ie you centre of gravity would be moved forward and the whole weight would rest on the right leg.

Now the previous process gets repeated again again.

2. You'd like to get up from the chair. Your weight rests on the base of the chair. Now with your legs on the floor, you push the floor downward. This is action. Due to opposite reaction now you are able to lift your centre of gravity vertically up and so you can come out of chair and able to stand.

3. A car tyre as it starts rotating, it pushes the earth backward. So the rotating tyre would be able to move forward. This is solely due to the presence of friction between the tyre and the road. If suppose the wheel is rotating in mud, then only wheel rotation but nor forward movement. As there is lack of frictional force between the tyre and mud, action and reaction both are absent and hence no forward progress.

How can you find the speed of the block when it reaches x equals 3 cm if it starts from x equals 0 with velocity v equals 0.5 meter per second?

You can find the speed of the block using the equation of motion: v^2 = u^2 + 2as, where v is the final velocity, u is the initial velocity, a is the acceleration, and s is the displacement. Given that u = 0.5 m/s, x = 3 cm = 0.03 m (displacement), and a is constant, you can calculate the final velocity v when the block reaches x = 3 cm.

What is newtons first law of motion What term summarizes this law?

newton's first law of motion is; objects at rest stay at rest and objects in motion stay in motion unless an outside force acts upon it. A term that summarizes this law could be that when a wheelchair is standing still, it is not in motion, the only way that the wheelchair can move is unless an outside force (person) acts on it, causing the wheel chair to change distance.

What does newton 3ed law of motion mean?

Newton's third law of motion states that for every action, there is an equal and opposite reaction. This means that when one object exerts a force on a second object, the second object will exert a force back on the first object that is equal in magnitude and opposite in direction.

What is the formula for mass when acceleration and force are known?

Obeying the second law of universal dynamics (Newton) , the equation is

F = ma

Algebraically rearrange

m = F/a

The metric units are

m(kg) = F(kgm/s^2) / a(m/s^2)

NB The 'm/s^2' cancel down leaving 'kg'.

NNB The units of force 'kgm/s^2' are known as 'Newtons'.

What type of electromagnetic wave has the highest velocity?

Gamma waves have the highest frequency (and energy) of all the electromagnetic waves.

Gamma Ray Bursts (GRB) from outer space (and that's about all we know of them!) have extraordinary high energies, and hence frequencies.

Is a puddle of water in motion?

No, a puddle of water is typically stationary unless there is external force or movement causing ripples or waves on the surface.

What is the name of the book that first introduced newtons laws of motion?

Philosophiæ Naturalis Principia Mathematica, Latin for "Mathematical Principles of Natural Philosophy", often called the Principia ("Principles"), is a work in three books by Sir Isaac Newton, first published July 5 1687.

What are three sports in which a force changes the velocity of a person?

  1. Basketball - Players exert a force when dribbling, passing, or shooting the ball, which changes the ball's velocity.
  2. Swimming - Swimmers exert force against the water to propel themselves forward, changing their velocity in the pool.
  3. Football - Players exert force when kicking or throwing the ball, resulting in a change in the ball's velocity.