Chapter 4 Force And Motion Concepts

Question 0

Forces that arise from physical contact between two objects

Answer 0

Contact forces

Question 1

A push or a pull

Answer 1

Force

Question 2

Forces that two objects exert on one another even though they are not touching

Answer 2

Non contact forces

Action at a distance forces

Question 3

Measure of amount of stuff something is composed of

Answer 3

Mass

Question 4

A resistance in any change of motion

Answer 4

Inertia

Question 5

What is Newton’s first law of motion

Answer 5

An object at rest will stay at rest and an object in motion will maintain a constant velocity unless acted upon by an unbalanced force

Question 6

Is motion a force

Answer 6

No

Question 7

When is newtons 1st law invalid

Answer 7

Inertial reference frame

Question 8

If an object has a constant velocity is there acceleration?

Answer 8

No

Question 9

What is Newton’s second law of motion

Answer 9

When a net external force acts on an object of mass, the resulting acceleration is directly proportional to the net force and the magnitude is inversely proportional to the mass

Direction of a = direction of net force

Question 10

What equation is Newton’s second law represented by

Answer 10

EF = ma

Question 11

Forces that the environment exerts

Answer 11

External forces

Question 12

Forces that one part of an object exerts on another part of the object

Answer 12

Internal force

Question 13

What type of force is included in Newton’s second law

Answer 13

External forces

Question 14

Diagram that represents the object and the forces that act upon it

Answer 14

Free body diagram

Question 15

What is Newton’s third law of motion

Answer 15

For every action (force) there is an equal but opposite reaction

Question 16

What is significant about the action and reaction forces in Newton’s third law

Answer 16

Their magnitudes are ALWAYS equal

Question 17

Are the accelerations of the action and reaction forces always equal?

Answer 17

No bc each force could act on a different object containing a different mass

Question 18

Force component perpendicular to the surface

Answer 18

Normal force

Question 19

Force parallel to the surface

Answer 19

Frictional force

Question 20

Which force is greater? Static or kinetic?

Answer 20

Static

Question 21

are horizontal and vertical forces dependent on each other?

Answer 21

No!

Question 22

The state at which an object has no acceleration

Answer 22

Equilibrium

Question 23

What is newtons law of universal gravitation

Answer 23

Every particle in the universe exerts an attractive force on every other particle