physics semester 1 review made by julia, lauren and emily

Physics Semester 1

ReviewMade by Julia, Lauren and Emily

True

True or false: Accuracy is the extent to which a reported

measurement approaches the true value of the quantity

measured.

Precision

The degree of exactness or refinement of a measurement is

called…

When air resistance is so great that

acceleration stops

What is terminal velocity?

Acceleration

What is change in velocity?

True

True or false: X and Y forces cannot mix in any physics

equation.

In the center of the object

When drawing a diagram, where should the origin of the x and y

axes be drawn?

Newtons (N)

What is weight measured in?

False: Newton’s Laws are Law of Acceleration, Law of Inertia, and

Law of Motion

True or false: One of Newton’s laws is called Law of Relations.

Force

A push or a pull is called what?

For finding angles and sides of right

triangles

What is SOH CAH TOA used for?

Normal Force

What is the force that the ground exerts on your feet

called?

False: Vertical and forward motion are both independent

True or False: vertical motion is dependent on forward

motion

Weight

The force of friction increases when WHAT is added?

Law of Inertia - an object at rest will stay at rest

unless acted upon by an outside force

What is Newton’s Law of Inertia?

Five

How many sig figs are in 3.0133?

True

True or false: The force of friction always points parallel to the

surfaces in contact.

If there is no air resistance then heavier objects do

NOT fall more slowly; they fall at equal rates.

Do heavier objects fall more slowly than lighter objects?

True

True or false: In order to effectively complete metric conversions, you should use dimensional analysis.

Centripetal acceleration is the acceleration an object experiences as it travels a certain

velocity along an arc. Centrifugal force is the imaginary force an unrestrained object

experiences as it moves around an arc.

What is the difference between centripetal acceleration and

centrifugal acceleration?

Displacement

What is change in position called?

False

True of false: Static friction exists when you are sliding.

Vectors have magnitude and direction; scalars have only magnitude

What is the difference between vectors and scalars?

a resisting/retarding force

What is friction?

Meters per seconds squared (m/s )

What unit is used to measurement acceleration (a) and centripetal

acceleration (ac)?

2

for every action there is an equal and opposite

reaction

What is Newton’s Law of Interaction?

Yes because 10N>4N

Will a 5 N box slide if it is being pushed with 10 N but pulled

with 4 N?

displacement, velocity,

acceleration, Force

What are some vectors quantities?

the mass of an object determines its resistance to movement; the

greater mass of an object impedes the overall rate of

acceleration

What is the Law of Acceleration?

Kilograms (kg)

What unit is mass measured by?

Weight

Provide a synonym for The Force of Gravity

length, area, volume, speed, mass, density

What are some scalars quantities?

acceleration towards the center; how quickly

an object’s direction changes

What is centripetal acceleration?

True

True or False: A heavy mass is hanging from a string. If the mass is

at rest, it will tend to remain at rest.

Divide the diameter in half.

d=2r

How can you determine the radius if only a diameter is given?

equal

You push against the wall and it makes you move backwards. The force you pushed against the wall must be ______ to the force the

wall reacted with

Radians per second (rad/s)

What unit is angular speed (ω) measured by?

The rate of change in displacement of an object moving in a

circular path

What is tangential velocity?

When it is at the same height

When an object is thrown upwards, when is its ascending speed equal

to its descending speed?

One

How many sig figs are in 0.001?

Radians (rad)

What unit is angular displacement (theta) measured

by?

Good Luck!