e-lesson motion (santa fe natinal high school)

8/3/2019 E-Lesson MOTION (Santa Fe Natinal High School)

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(SPEED, VELOCITY)


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OBJECTIVES:At the end of the of the presentation, the student

must define or recognized Motion.

Differentiate speed and velocity.

Calculate speed and velocity of an object.


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MOTIVATIONDirections:

Give what is needed and answer questions below.

1. Which of the pictures belowshows a motion?


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INTRODUCTIONAfter that activity we could now say that Motion is all

around us. We see it in the everyday activity of people, of cars on thehighway, in the wind, and with patience, we see it in nighttimes stars.Even in the light that let us see motion is caused by motion of

electrons in atom. Truly, motion is everywhere.


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MOTIONMotion refers to a change in location of an object with

respect to its reference point.

Examples of these are:

A moving A flying A falling

Skier Rocket man


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A- SPEEDSpeedis the measure of how fast is an object over

a period of time. Example of this is:

A car moves 50 km/h


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Speed is also defined as:

Example:

If a man walk 150 meters to working place in300 seconds, what is the average speed of theman?

speed(S)= distance (d)time (t)

150 meters


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SOLUTION

Given:

d= 10 km

t= 5 h

d

t= 150 meters

300 seconds

= 0.5 m/s

s= Formula for the speed

Substitute the given values

Average speed of the man


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B-VELOCITYVelocity is the measurement of how fast is an

object over a period of time with a respect to direction.Example of this is:

A school bus travelled at 30 km/h to east.


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Velocity is also defined as:

Example:

A rocket fly 1500 km to the moon at exactly35 hours, what is the velocity of the rocket?

speed (s) and direction (d)velocity (v) =

Moon


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SOLUTION

Given:

d= 1500 miles

t= 35 h

d

t= 1500 km

35 h

= 42.86 km/h to the moon

Formula for the velocity

Substitute the givenvalues

Velocityof the rocket

s= (direction)

(to the moon)


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EVALUATION

DIRECTION:

Click or choose the

correct answer in thefollowing questions.


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1.) It is refers to a change in location ofan object with respect to its referencepoint?

.) Motion Speed

.) Velocity .) Direction


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2.) It is the measurement of how fast is

an object over a period of time with arespect to direction?

.) Motion .) Speed



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3.) If a car travels about 5 hours in a 100

kilometre to north, what is the velocityof the car?

) 10km/h of N.) 20km/h of N

.) 30 km/h of S.) 40 km/h of S


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4.) It is the measurement of how fast

is an object over a period of time?

) Motion .) Speed



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5.) If a car travels about 10 hours in a

50 kilometre, what is the speed of thecar?

.) 30km/h .) 10 km/h

.) 20km/h .) 5 km/h


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Assignment:1.) Define the following words:

a.) Acceleration

b.) Deceleration

2.) When can you tell that a movingobject is accelerating ?


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e-lesson motion (santa fe natinal high school)

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