**A scalar** is a amount that is fully specified through its magnitude and also has no direction. A scalar have the right to be explained either dimensionless, or in terms of some physical quantity. Examples of scalars are: mass, volume, distance, energy, and time.

Scalar quantities can be manipulated through the legislations of arithmetic applicable to herbal numbers. For instance if I include 20 grams of street to a recipe and then include 20 grams much more the an outcome is 40 grams of sugar in the recipe. If i buy a liter (1000ml) bottle of water and also drink 250 ml, the lot left over is 750 ml.

A **vector** is a quantity that specifies both a magnitude and a direction. Together a quantity may be represented geometrically by an arrowhead of size proportional to its magnitude, pointing in the assigned direction. Instances of vectors are: displacement, velocity, acceleration, force and electric field. Vectors have the right to be added in simple ways the scalars can. Because that example: A plane flies southern at 500 miles/hour. A wind blows from the eastern at 100 miles/hour occurs. The resultant rate is not 600 miles/hour or 400 miles every hour.

The resultant (red arrow) can be calculated making use of the Pythagorean Theorem R= sqrt (100^2 + 500^2) R= 509.9 mi/hr. The direction of the aircraft can it is in calculated using the cosine function. tan = 100/500 = 11.31 degrees(Note: chart is not drawn to scale) |

**1. ___ ****_ is an example of a scalar quantity** a) velocity b) force c) volume d) acceleration

**2. ****___ is an instance of a vector quantity** a) massive b) pressure c) volume d) density

**3. ****A scalar quantity:** a) always has massive b) is a quantity that is fully specified through its size c) shows direction d) does not have units

**4. A vector quantity** a) deserve to be a dimensionless amount b) specifies just magnitude c) specifies just direction d) mentions both a magnitude and a direction

**5. ****A young pushes versus the wall surface with 50 pounds the force. The wall surface does no move. The resultant force is:** a) -50 pounds b) 100 pounds c) 0 pounds d) -75 pounds

**6. A guy walks 3 miles north then turns right and also walks 4 miles east. The resultant displacement is:** a) 1 mile SW b) 7 miles NE c) 5 miles NE d) 5 mile E

**7. A plane flying 500 MI/hr due north has actually a tail wind of 45 MI/hr the result velocity is:** a) 545 miles/hour early south. b) 455 miles/hour north. c) 545 miles/hr early north. d) 455 MI/hr due south

**8. The difference in between speed and velocity is:** a) speed has no systems b) rate shows just magnitude, when velocity represents both magnitude (strength) and also direction c) they use various units to stand for their magnitude d) velocity has actually a higher magnitude

**9. The result magnitude of 2 vectors**

a) Is constantly positive b) have the right to never be zero c) have the right to never be negative d) Is generally zero

**10. I beg your pardon of the adhering to is no true.** a) velocity can be an unfavorable b) velocity is a vector b) speed is a scalar d) speed have the right to be negative

Force, Work and Energy

Speed, Velocity and also Acceleration: What is the difference in between speed and velocity? What is acceleration? Graphing Velocity and Acceleration. Trial and error your understanding.

Force: What is force? measure forces. Explicate Forces. What go a force do? What is friction? assessment Questions.

Vectors and also Scalars: What is a vector quantity? examples of Vectors. What is a Scalar Quantity? instances of Scalars. Test your understanding of vectors and scalars.

Newtons Three legislations of Motion: watch Newton"s Three laws in Latin and the English translation. Instances for each legislation are given..

Work, Energy and Power: Definitions because that work, energy and also power. Types of energy, calculating work, and also power.

Difference in between Mass and also Weight: an excellent page for gifted and talented students! part excellent complicated problems.

See more: Black Snake With Red Ring Around Its Neck Snake, Prairie Ring

Gravity, Mass and also Weight: Gravity, mass and weight in relation to the Solar system

basic and acquired Units: straightforward and derived units consisting of , physical quantities, signs for devices of measure.