can anyone give me the 9th class ICSE Physics Laws of Motion chapter notes
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Answer:
Frequently Asked Questions on Laws of Motion
What is Contact forces?
These are the forces that act upon bodies when they are in physical contact are known as contact forces. Example-Force exerted on two bodies while the process of collision, frictional force
Is Frictional force is a contact force?
Yes, Frictional force is a contact force. These are the forces that act upon bodies when they are in physical contact with each other.
What is Non-Contact forces?
These are the forces that are experienced by the bodies without any physical contact is known as non-contact force. Example – Electrostatic force and gravitational force.
Name the physical quantity which cause motion in a body?
The physical quantity that causes motion in a body is force.
Is force needed to keep a moving body in motion?
No, force is not required to be applied to a moving body unless the direction or the speed is required to be changed.
What is Galileo’s law of inertia?
Galileo’s law of inertia is as stated below:
“An object, if once set in motion, moves with uniform velocity if no force acts on it.”
State Newton’s first law of motion?
Newton’s first law states that – if a body is in a state of rest, it will remain in the state of rest and if it is in the state of motion, it will remain moving in the same direction with the same speed unless an external force is applied on it.
What is meant by the term inertia?
The property of an object by virtue of which it tends to retain its state of rest or of uniform is called inertia.
Name the two kinds of inertia?
The two kinds of inertia are:
Inertia of rest
Inertia of motion