Question

Newton is the unit of which quantity
$A.$ Acceleration
$B.$ Force
$C.$ Mass
$D.$ Gravity

Answer 1

Hint: Force is a vector quantity. It has both magnitude and direction. It is the product of mass and acceleration. Force is an ability or attribute to cause physical change to an object. 1 Newton is the force which when applied to a mass of 1kilogram, accelerates it by\[1\text{ }m{{s}^{-2}}\].

Complete step by step answer:
Newton is the unit of Force.
\[1N=1kg\times 1m{{s}^{-2}}\]
Formula of force is
\[F=m\times a\], where m is mass and is acceleration.
Pressure is force over a particular area.
Hence the correct option is B.

Additional information:
Force is an ability or attribute to cause physical change to an object. There are four fundamental forces:
1) Gravity- It is the attractive force between two objects with mass or energy. Force of attraction between two heavenly objects is an example of gravitational force.
2) Weak force- The weak force is also known as weak nuclear force. It is responsible for nuclear decay. A subatomic particle changes into another because of weak force. For example, a neutrino near a neutron can change the neutron into a proton and the neutrino changes into an electron.
3) Electromagnetic force- The force acting between charged particles like negatively charged electrons and positively charged protons is known as the electromagnetic force. This force is also known as the Lorentz force. Opposite charges attract one another, while like charges repel. More the magnitude of charge more is the force. It is an infinite distance force like gravity.
4) Strong nuclear force- The strongest of the four fundamental forces of nature is the strong nuclear force. It's much stronger than the force of gravity. It binds the fundamental particles of matter together to form larger particles so it is much greater than the gravitational force. Quarks that make up protons and neutrons are bound together by strong nuclear force. The strong force also puts the protons and neutrons together.

Note:
There are different concepts related to force which includes:
Thrust- It increases the velocity of an object.
Drag- It decreases the velocity of an object.
Torque- It produces changes in rotational speed of an object.
A system of bodies in contact with each other distributes force within each other which is known as internal mechanical stress.