Physics Final Practice

Physical Quantities

100

How many fundamental physical quantities exists?

7 mass, temperature, time, length, luminouse intensity, amount of substance, electric current

200

Unit of measure of velocity

m/s

300

Unit of measure of acceleration

m/s²

400

By the nature, physical quantities are classified in

scalar and vectors

500

The unit of measure for energy is

Joule

Scientific Notation and Prefixes

100

Micro is 1 x 10 to the power of

-6

200

Mega is 1 x 10 to the power of

6

300

Write 1 Giga

1 x 10⁹

400

Write 1 nano

1 x 10^-9

500

0.000001 s is in scientific notation

1 x 10^-6 s

Vectors

100

Formula to get the x component of a force

Force * cos(angle)

200

Formula to get the y component of a force

Force * sin(angle)

300

How to get the reference angle

arctan(Y component / X component)

400

What is the total direction for 30 ° N of W

150 °

500

What is the formula to get the magnitude of the vector

SQRT( SQR(x) + SQR(y) )

Forces

100

Formula for the gravitational for or weight

mass * gravity

200

This force is always perpendicular (90 degrees) to the surface

Normal force

300

Forces applied through ropes or cables

Tension force

400

kg*m/s² is 

a Newton

500

What is the formula to get the friction force

Frictio force = coefficient of friction * normal force

Newton's laws

100

By what other name is Newton's first law known?

Inertia

200

Formula used to represent the second Newton's law

F = mass * acceleration

300

Action - Reaction corresponds to the first Newton's law. True or False?

False

400

In Newton's second law, acceleration is directly proportional to force. True or False

True

500

Which Newton's law says: "Forces always occur in pairs, if a body exerts a force on another, it will experience an equal and opposite force."

Third law