The average resistance force is the change in momentum divided by the time required to stop the bullet . The distance covered under constant acceleration is 1/2 a* t^2. The average acceleration is the change in velocity divided by the time.
How do you find the resistive force of friction?
- F R is the resulting force.
- F is the force pushing the object (F = ma)
- F r is the resistive force of friction (F r = μN)
How do you calculate average force?
Therefore, the average force is equal to the mass of the body multiplied by the average velocity of the object over the defined time .
What is the resistive force?
In physics, resistive force is a force, or the vector sum of numerous forces , whose direction is opposite to the motion of a body, and may refer to: Friction, during sliding and/or rolling. ... Magnetic repulsion, when a magnetic object moves against another magnetic field.
What is resistive formula?
Resistivity, commonly symbolized by the Greek letter rho, ρ, is quantitatively equal to the resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length l; ρ = RA/l . ... Thus, in the metre-kilogram-second system, the unit of resistivity is ohm-metre.
How can I calculate average?
Average This is the arithmetic mean, and is calculated by adding a group of numbers and then dividing by the count of those numbers . For example, the average of 2, 3, 3, 5, 7, and 10 is 30 divided by 6, which is 5.
Is force and resistance the same?
The normal force is the support force exerted upon an object that is in contact with another stable object. ... The air resistance is a special type of frictional force
Is gravity a resistive force?
It is difficult to imagine a real situation in which the one and only force is a resistive force proportional to the speed . A body falling through the air won’t do, because, in addition to the resistive force, there is the acceleration due to gravity.
Is friction a mechanical force?
Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force , like gravity or electromagnetism.
What is current formula?
The current is the ratio of the potential difference and the resistance. It is represented as (I). The current formula is given as I = V/R . The SI unit of current is Ampere (Amp).
What is an example of resistance?
The act or an instance of resisting or the capacity to resist. Resistance is defined as a refusal to give in or to something that slows down or prevents something. An example of resistance is a child fighting against her kidnapper . An example of resistance is wind against the wings of a plane.
What is measured in Ohm?
Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance.
What is the 3 version of work formula?
Three quantities must be known in order to calculate the amount of work. Those three quantities are force, displacement and the angle between the force and the displacement .
How do you calculate total work?
Work can be calculated with the equation: Work = Force × Distance . The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.
What is the formula of work done by the force?
Work is the use of force to move an object. It is directly related to both the force applied to the object and the distance the object moves. Work can be calculated with this equation: Work = Force x Distance .
