LESSON3: forces and newton's law

Question 1

is the resistance an object has to a change in its state of motion

Answer 1

inertia

Question 2

the greater the mass,

Answer 2

the greater inertia an object has

Question 3

the branch of mechanics concerned with the motion of bodies under the action of forces

Answer 3

dynamics

Question 4

a set of time-space coordinate system that is stationary or with constant velocity

Answer 4

inertial reference frame

Question 5

newton’s law of motion

Answer 5

1.law of inertia
2.law of acceleration
3.law of interaction

Question 6

an object at rest remains at rest, an object in motion continues in motion with constant velocity unless the object experienced a net external force

Answer 6

law of inertia

Question 7

the acceleration of an object’s directly proportional to the net external force acting on the object and inversely proportional to the object’s mass

Answer 7

law of acceleration

Question 8

If two objects interact, the magnitude of force exerted on object 1 by object 2 is equal to the magnitude of the forceO simultaneously exerted on object 2 by object 1, and these two forces are pposite in directions.

Answer 8

law of interaction

Question 9

A push or pull upon an object resulting from the object’s interaction with another object.

Answer 9

forces

Question 10

Measured in units of Newton (N).

Answer 10

forces

Question 11

type of forces

Answer 11

1.contact
2.non-contact

Question 12

Two interacting objects are physically in contact with each other

Answer 12

contact

Question 13

examples of contact force

Answer 13

Tensional, Frictional, Normal, Applied, Air Resitance

Question 14

Two interacting objects are not in physical contact with each other, but are able to exert a push or pull despite the physical separation.

Answer 14

non-contact

Question 15

Example example of non-contact force

Answer 15

Gravitational, Magnetic, Electric.

Question 16

Force which is applied to an object by another object or by a person.

Answer 16

applied forces

Question 17

Force which is transmitted through a string, rope or wire when it is pulled tight by forces acting at each end.

Answer 17

tensional forces

Question 18

Support force exerted upon an object which is in contact with another stable object

Answer 18

normal force

Question 19

Force exerted by a surface as an object moves across it or makes an effort to move across it.

Answer 19

friction force

Question 20

Opposes the motion of the object.

Answer 20

friction force

Question 21

Special type of frictional force which acts upon objects as they travel through the air.

Answer 21

air resistance

Question 22

Depends on surface area of object

Answer 22

air resistance

Question 23

Force with which the earth, moon, or other massive body attracts an object towards itself.

Answer 23

gravitational force

Question 24

Equal to the weight of the object as given by the equation: Fg = mg

Answer 24

gravitational force

Question 25

Amount of matter that is contained by the object in units of kilograms (kg)

Answer 25

mass

Question 26

Force of gravity acting upon an object in units of newton (N).

Answer 26

weight