CH 2 - Newton's 1st Law of Motion

Question 1

Aristotle’s idea of motion

Natural motion

Answer 1

Any object not in its proper place will strive to get there.

Question 2

Natural motion moves

Answer 2

Straight up or straight down for all things on Earth.

Question 3

Violent motion

Answer 3

Produced by external pushes or pulls on objects.

Question 4

Force

Answer 4

A push or a pull.
Measured in units of Newtons (N)
1 N = 1 kg∙m/s2

Question 5

Inertia

Answer 5

A property of matter to resist changes in motion.
depends on the amount of matter in an object (its mass).

Question 6

Vector quantity

Answer 6

A quantity whose description requires both magnitude (how much?) and direction (which way?)

Question 7

Scalar quantity

Answer 7

magnitude only (e.g. mass, volume, speed, etc.)

Question 8

net force is the combination of

Answer 8

all forces that change an object’s state of motion.

Question 9

The Equilibrium Rule

Answer 9

The vector sum of forces acting on a non-accelerating object = zero

Question 10

Support force

Answer 10

an upward force on an object that is opposite to the force of gravity.

Question 11

Static equilibrium

Answer 11

at rest; not moving

Question 12

Dynamic equilibrium

Answer 12

constant velocity