Newton's Law

Question 1

normal force?

Answer 1

The force or the component of a force which a surface exerts on an object with which it is in contact, and which is perpendicular to the surface.

Question 2

frictional force

Answer 2

The force that opposes the motion of an object and which
acts parallel to the surface.

Question 3

static frictional force

Answer 3

The force that opposes the tendency of motion of a
stationary object relatve to a surface.

Question 4

kinetic frictional force

Answer 4

The force that opposes the motion of a moving object
relative to a surface.

Question 5

Newton’s first law of motion

Answer 5

A body will remain in its state of rest or motion at
constant velocity unless a non-zero resultant/net force acts on it.

Question 6

Newton’s second law of motion

Answer 6

When a net force acts on an object,the object
will accelerate in the direction of the force, and the acceleration is directly proportional to
the force and inversely proportional to the mass of the object.

Question 7

Newtons third law of motion

Answer 7

When object A exerts a force on object B, object B
SIMULTANEOUSLY exerts an oppositely directed force of equal magnitude on
object A.

Question 8

State Newton’s Law of Universal Gravitation

Answer 8

Each body in the universe attracts every
other body with a force that is directly proportional to the product of their masses and
inversely proportional to the square of the distance between their centres.

Question 9

weight

Answer 9

the gravitational force the Earth exerts on any object on or near its
surface.