Table of Contents
What does the momentum tell you?
Momentum is a measurement of mass in motion: how much mass is in how much motion. It is usually given the symbol p. This simple relationship means that doubling either the mass or velocity of an object will simply double the momentum. The useful thing about momentum is its relationship to force.
What is the momentum of a person?
a quantity expressing the motion of a body or system, equal to the product of the mass of a body and its velocity, and for a system equal to the vector sum of the products of mass and velocity of each particle in the system.
Does momentum keep things going?
As long as no external forces are acting on the objects involved, the total momentum stays the same in explosions and collisions. We say that momentum is conserved. You can use this idea to work out the mass , velocity or momentum of an object in an explosion or collision.
What does a momentum of 0 mean?
Momentum is mass times velocity. When an object is moving, it has a non-zero momentum. If an object is standing still, then its momentum is zero.
Why is momentum so important?
Momentum is an important consideration in physics because it describes the relationship between speed, mass and direction. Momentum describes the force needed to stop objects and to keep them in motion. Momentum can also be used to predict the resulting direction and speed of motion of objects after they collide.
What is a real life example of momentum?
A four-wheeler moving at a relatively fast velocity has a smaller momentum than the semi-truck because of its small mass and will stop much faster. 3. A bullet, although small in mass, has a large momentum because of an extremely large velocity.
Is momentum dependent on inertia?
Whereas momentum, p, is directly proportional to inertia, that means how much the body oppose the external that is what we called inertia, the more will be momentum.
How do you know if momentum is positive or negative?
Momentum is a vector and has the same direction as velocity v. Since mass is a scalar, when velocity is in a negative direction (i.e., opposite the direction of motion), the momentum will also be in a negative direction; and when velocity is in a positive direction, momentum will likewise be in a positive direction.
Can any object have momentum if its momentum is zero?
It has some kinetic energy. It means that the body has motion. Hence, Even if its mechanical energy is zero, the body has momentum.