What happens if no force acts on an object

Learn now! Start Now. In other words, it is simply the force exerted by a string when it is subjected to pull. Momentum: It is the strength contained in the object due to its motion. It is the product of the mass of an object and the velocity with which it is moving.

Impulse: It is the product of force and time. One can also say that it is the change in momentum. If no force is applied to a moving object, then it will stop due to Friction. So option 4 is correct. As per the first law of motion -" an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force". So, if no force is applied to a moving object, it should remain in motion as per the first law of motion. But, it is stopped due to friction. Get Started for Free Download App.

More Forces Questions Q1. The laws form the basis for mechanics—they describe the relationship between forces acting on a body, and the motion experienced due to these forces. These three laws state:. The first law of motion defines only the natural state of the motion of the body i. It does not allow us to quantify the force and acceleration of a body. The acceleration is the rate of change in velocity; it is caused only by an external force acting on it.

The second law of motion states that the net force on an object is equal to the rate of change of its linear momentum. Linear momentum of an object is a vector quantity that has both magnitude and direction. It is the product of mass and velocity of a particle at a given time:. From this equation, we see that objects with more mass will have more momentum. Picture two balls of different mass, traveling in the same direction at the same velocity.

If they both collide with a wall at the same time, the heavier ball will exert a larger force on the wall. It states: the net force on an object is equal to the rate of change of its linear momentum. From calculus we know that the rate of change is the same as a derivative. When we the linear momentum of an object we get:. Force and Mass : This animation demonstrates the connection between force and mass. As we stated earlier, acceleration is the rate of change of velocity, or velocity divided by time.

Sir Isaac Newton was a scientist from England who was interested in the motion of objects under various conditions. In , he published a work called Philosophiae Naturalis Principla Mathematica , which contained his three laws of motion. These laws form the bases for mechanics.

The laws describe the relationship between forces acting on a body, and the motion is an experience due to these forces. If object A exerts a force on object B, because of the law of symmetry, object B will exert a force on object A that is equal to the force acted on it:. A force, color blue F , applied to an object causes an acceleration , color red a , which we know from Newton's 2nd law:.

Acceleration is the change of velocity per unit time, so if there is no force, all we know is that the acceleration is zero. Therefore, the velocity is not changing. If the object was already moving, then it will just keep moving. So, yes, the object can be moving when there is no force applied to it. Note: "force" in this discussion is to be interpreted as net force. Many features only work on your mobile device.

If you like what you see, we hope you will consider buying. Get the App. What happens if more than one force acts on an object?