Dynamics

Question 1

dynamics

Answer 1

causes of motion

Question 2

Newton’s First Law

Answer 2

an object in motion stays in motion, an object at rest stays at rest until acted on by a force (inertia)

Question 3

inertial motion

Answer 3

motion in the absence of a net force

Question 4

mass

Answer 4

the amount of inertia an object has is measured this way

Question 5

force

Answer 5

something that changes motion

Question 6

Newton’s Second Law

Answer 6

F = ma ; the change of motion (mass & velocity) of an object is proportional to the force impressed, and is made in the direction of the straight line in which the force is impressed

Question 7

four fundamental forces

Answer 7

gravity, electromagnetism, strong force, weak force

Question 8

Newton’s Third Law

Answer 8

equal & opposite reactions, forces always occur in pairs

Question 9

types of contact forces

Answer 9

normal force, push/pull, friction force, tension force

Question 10

types of weight forces

Answer 10

gravity

Question 11

weight

Answer 11

the force of gravity on an object

Question 12

the component perpendicular to the surfaces …

Answer 12

normal force

Question 13

the component parallel to the surfaces

Answer 13

friction

Question 14

hanging equilibrium

Answer 14

tension is constant throughout the rope, except at a turning or contact point

Question 15

Hooke’s Law

Answer 15

the “restoring” force will be proportional to the deformation F = -k delta L

Question 16

kinetic friction

Answer 16

opposes the direction of motion, associated with when you are moving

Question 17

static friction

Answer 17

object is not moving, opposes the direction of attempted on intended motion