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Practice > Physics > Flashcards

Physics Flashcards

1
Q

Newton’s Law of Motion was formulated by ___________________

A

Sir Isaac Newton

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2
Q

body at rest will remain at rest and a body in motion will remain in motion

A

Law of Inertia

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3
Q

The body will move continuously unless a force is applied to stop it

A

Body in Motion

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4
Q

a term used to measure the ability of an object to resist a change in its state of motion

A

Inertia

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5
Q

The word 1) _______ comes from the latin word 2) _________ meaning 3) _____

A

1) Inertia
2) Inertus
3) Lazy

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6
Q

any action that has the ability to change an object’s motion

A

Force

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7
Q

directly proportional to the force (NET force) acting on it and inversely proportional with the mass of the body. When a body is at rest, some other body has to apply a push to make it start moving. When a body is in motion, some other body has to apply a pull to make it come to stop.

A

Law of Acceleration

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8
Q

the gravitational force with which the earth attracts the body

A

Weight

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9
Q

the quantity of matter in the body and the same everywhere

A

Mass

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10
Q

For every action force, there is an equal and opposite reaction force

A

Law of Interaction

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11
Q

There must be a force.
The object must move through a distance in the same direction
as the force.

A

Work

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12
Q

Energy cannot be created nor destroy, but can be transformed from one form to another

A

Law of Conversation of Energy

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13
Q

rate of doing work

A

Power

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14
Q

capacity to do work

A

Energy

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15
Q

the energy possessed by an object due to its position

A

Gravitational Potential Energy

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16
Q

pictures that show the size and direction of all forces acting on an object

A

Free-Body Diagram

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17
Q

Friction between two bodies in contact if there is no relative motion. An object will not slide or move if the coefficient of friction is greater.

A

Static Friction

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18
Q

One surface slides over the other.
An object will move if the coefficient of
friction is less than to hold the object.

A

Kinetic / Sliding Friction

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19
Q

a force that the string exerts on the object to which it is attached

A

Tension

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20
Q

force perpendicular to the surface of contact or the force makes a 90 degree with the surface of contact which along horizontal lines

A

Normal Force

21
Q

actual force that is exerted and opposite to the applied force

A

Frictional Force

22
Q

It is the downward non- contact interaction between the planetary body and an object it is attracting.

A

Gravitational Force

23
Q

It is a unit that has a value 746 watts.

A

Horsepower

24
Q

It is the rate of doing rate

A

Power

25
Q

It is a state that when a change in kinetic energy occur, work is done.

A

Work - Energy postulate

26
Q

When one body exerts a force on another body, the second exerts an equal force in the opposite direction on the first.

A

Third Law of Motion

27
Q

It is also called inertia in motion

A

Momentum

28
Q

It states that there will be a change in
momentum of a body when an external force acts on it.

A

Impulse-Momentum Theorem

29
Q

If an unbalanced force acted on a body, acceleration is produced which is the directly proportional to the force acted on it and indirectly proportional to the mass of the body.

A

Second Law of Motion

30
Q

Type of collision wherein the tvwo objects bounce after the collisions and the move separately with no change in kinetic energy.

A

Elastic Collision

31
Q

SYSTEM
1)
2) CGS
3)

MASS
1) kg
2)
3) slug

ACCELERATION
1) m/s^2
2)
3)

FORCE
1)
2) g • cm/s^2 d
3) slug • ft/s^2 P

A

SYSTEM
1) MKS
2)
3) FPS

MASS
1)
2) g
3)

ACCELERATION
1)
2) cm/s^2
3) ft/s^2

FORCE
1) kg • m/s^2 N
2)
3)

32
Q

Speed increases when the net force is in the same direction as the motion.
Speed decreases when the net force is in the opposite direction as the motion.

A

Direction of Acceleration

33
Q

Newton’s third law discusses pairs of object and the interactions between them. The two forces in a pair are called _____________________

A

Action and Reaction

34
Q

No 1. _______ is done if the object has
no 2. ______________ , even if the force was applied on it.

A
  1. work
  2. displacement
35
Q

heavy or massive objects have greater momentum even if they are moving slowly.

A

Momentum

36
Q

_________________ is used to quantitatively described the motion of an object.

A

Linear Momentum

37
Q

________________ of an object of mass moving in velocity, is defined as the product of the mass and velocity

A

Linear Momentum

38
Q

The word 1. ____________ plural
2. ____________ is a latin word and means movement or moving power

A
  1. Momentum
  2. Momenta
39
Q
  • German Scientist
  • He defined progress as the quantity of motion with which the body proceeds with a center direction.
A

Gottfried Wilhelm Van Leibniz

40
Q
  1. __________ is the product of the force and the time during which it acts. It is usually associated with 2. ____________
A
  1. Impulse
  2. Collision
41
Q

States that the total momentum does not change if they are no net external forces acting at it. States that the total momentum before collision of bodies is equal to the total momentum after the collision.

A

Law of Conversation of Momentum

42
Q

An interaction between two or more bodies

A

Collision

43
Q

Two objects bounce after the collisions and they move separately with no kinetic energy

A

Elastic Collision

44
Q

Two objects deformed during collision but the object moved separately after collision

A

Inelastic Collision

45
Q

When the two objects collide and move together as one mass with a common velocity after collision both objects are deformed

A

Perfectly Inelastic Collision

46
Q

kg/ kilogram

A

Unit of Mass

47
Q

kg m/s

A

Unit for Momentum

48
Q

It is the change in velocity per change in time

A

Acceleration

49
Q

The center point of the object which the line of symmetry did not cross

A

Center of Mass

Practice (4 decks)

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