Smalley Uniform Motion Test 1

Distance (Definition + Scalar or Vector?)
Position (Definition + Scalar or Vector?)

How far an object travels, Scalar
How far an object travels with respect to a starting point, Vector

How far an object travels

Distance

How far an object travels with respect to a starting point

Position

Define and give 3 examples
Scalar Quantity
Vector Quantity

A quantity that is just a number without a direction. Tells you everything you need to know. Temperature, distance, speed

A quantity that is a number with a direction. Position, velocity, displacement

A quantity that is just a number without a direction. Tells you everything you need to know. Temperature, distance, speed

Scalar

A quantity that is a number with a direction. Position, velocity, displacement

Vector

Speed (definition + scalar/vector)

The distance covered per amount of time. Scalar

The distance covered per amount of time

Speed

Motion is ____. What does this mean?

Relative. Motion of objects are always described as relative to something else

Define
Average speed
Instantaneous Speed (+1 example)

Total distance per total travel time.
The speed at any given moment. Speedometer

Displacement (definition, symbol, formula, scalar/vector)

Change in position. Delta X. Final position - Initial position. Vector

Change in position

Displacement

Formula for displacement?

Displacement = Final position - Initial position

Velocity (Definition, equation, scalar/vector)

Speed with a direction. Average velocity = Displacement / Time. Vector

Speed with a direction.

Velocity

Constant speed is ____

Steady speed (neither speeding up nor slowing down)

Constant velocity is ___

Constant speed and constant direction

Uniform Motion

Motion where an object’s velocity is constant

What does PIES stand for?

Picture, Information, Equation, Solve

Motion where an object’s velocity is constant

Uniform motion

Constant speed AND constant direction

Constant velocity

Change (delta) is ALWAYS

Final quantity - initial quantity

25 meters is a ___, 25 meters east is ___

Distance, displacement

Slope of the line in x vs t graphs is the ___ of an object

velocity

A steeper slope in x vs t graphs means a (faster/slower) ______

faster speed (magnitude)

A flat line (0 slope) in x vs t graphs means that the object is ____

Resting

In a v vs t graph, a horizontal line means that the velocity is _____

constant

In a v vs t graph, what does a constant velocity look like a ______

Horizontal line

In a v vs t graph, the x axis (line of y=0) means that the object is ____

at rest

In a v vs t graph, what does an object at rest look like?

Horizontal line at y=0

In a x vs t graph, what does an object at rest look like?

A horizontal line

In a v vs t graph, how do you determine the velocity (speed) an object is going in?

How close it is to the x axis

In a x vs t graph, how do you determine the velocity (speed) an object is going in?

The magnitude (steepness) of the slope

Constant velocity looks like a _____ in a v vs t graph

Horizontal line

Positive velocity on a v vs t line
Negative velocity on a v vs t line

y = x {x>0}
y = x {x<0}

What does negative velocity mean? (use ex. -4 m/s)

The object is moving the opposite direction (left) at 4 m/s

Position

How far an object travels with respect to a starting point

Force (Definition, symbol, unit, vector/scalar)

A push or a pull exerted on an object by another object. F, Newton, Vector

What does a force have?

A magnitude and a direction

How many objects is necessary for a force to happen?

Two objects

Two major types of forces (definitions and 3 examples)

Contact force: 2 objects touching. Tension, air resistance, Friction
Field force: Forces acting over a distance. Gravity, Magnetic force, Electric Force.

How can we tell when there is a force? (3 things)

An object getting pushed or pulled
An object doing the pushing or pulling
Interaction between the two objects

Weight (Definition, Symbol, Unit, Vector/Scalar, How to measure it)

The force of gravity on an object. W or Fg, Newtons, Vector, Scale

What does a scale measure?

The force that it applies on an object

Equilibrium

When the net force is zero (balanced)

Net force (definition, symbol, unit, scalar/vector)

The vector sum of all individual forces acting on an object. Sigma F, Newton, Vector

If an object is at rest OR moving at a constant velocity (uniform motion), then the net force is

0

What is the net force for uniform motion?

0

A picture of a single object with each of the individual forces acting on it represented with a labeled arrow

Free body diagram

Normal force

Force that opposes the weight of the object and is perpendicular to the surface. Also called perpendicular force.

Force that opposes the weight of the object and is perpendicular to the surface. Also called perpendicular force.

Normal force

Equilibrium rule

The sum of all forces on a non-accelerating object is 0

Newton’s first law

Objects with mass have inertia. Every object continues in a state of uniform velocity unless acted upon by an external net force

Inertia

Resistance to changes in velocity

Greater mass = ____ inertia

Greater

What does having greater inertia/greater mass mean?

More resistant to changes in velocity

Mass (Definition, symbol, SI Unit, Vector/Scalar)

The measure of an object’s inertia. Property of an object that causes gravitational forces with other objects with mass, m, kg, Scalar

The measure of an object’s inertia

Mass

The force of gravity on an object

Weight

Name all these forces:
F_g , F_T, F_s , F_fr , F_air , F_N , F_a

Force of gravity, Tension (rope/strings), Spring force, Friction, Air resistance, Normal force, Applied force

Write the symbol for all these forces:
Force of gravity, Tension (rope/strings), Spring force, Friction, Air resistance, Normal force, Applied force

F_g , F_T, F_s , F_fr , F_air , F_N , F_a

Draw FBD: Baseball on the table

Draw FBD: Baseball on the table

Draw FBD: A block sliding to the left at constant velocity

Draw FBD: A block sliding to the left at constant velocity

Draw FBD: A block at rest on an incline

Draw FBD: A block at rest on an incline

Draw FBD: Airplane moving to the right at constant velocity

Draw FBD: Airplane moving to the right at constant velocity

Draw FBD: A frictionless cart moving to the right at a constant velocity

Draw FBD: A frictionless cart moving to the right at a constant velocity

Description of a location, including how much gravitational force will act on each kg of mass placed there

Gravitational Field Strength

Gravitational Field Strength (symbol, SI unit, scalar/vector quantity, contact/field force)

g, N/kg, vector quantity, field force

Fg = mg (what is it). What is the value of g on earth?

Force of gravity = mass times gravitational field strength. -10N/kg

Explain the difference between gravitational force and gravitational field

Gravitational force = gravitational field (strength) times the mass. Gravitational Force is the force of gravity of an object.