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This pdf explains how to calculate the average by dividing the total distance traveled by the total time. The average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance. It's a scalar quantity which means it is defined only by magnitude.

1.
TEKS 6.8C: Calculate average speed using distance and time measurements.

How Do You Calculate

Average Speed?

• If you know the distance an object travels in a certain amount of

time, you can calculate the speed of the object.

• Speed is a type of rate. A rate is a measurement of something

that occurs or changes in one unit of time.

• The speed of an object is the distance the object travels per unit

of time.

Speed = Distance/Time

Identify What

Whatmeasurement

measurementofofan

anobject’s

object’sspeed

speedchanges

changesininone

oneunit

unitofof

time? (contd.)

How Do You Calculate

Average Speed?

• If you know the distance an object travels in a certain amount of

time, you can calculate the speed of the object.

• Speed is a type of rate. A rate is a measurement of something

that occurs or changes in one unit of time.

• The speed of an object is the distance the object travels per unit

of time.

Speed = Distance/Time

Identify What

Whatmeasurement

measurementofofan

anobject’s

object’sspeed

speedchanges

changesininone

oneunit

unitofof

time? (contd.)

2.
TEKS 6.8C: Calculate average speed using distance and time measurements.

How Do You Calculate

Average Speed?

• To calculate average speed, divide the total distance traveled

by the total time.

• For example, suppose a cyclist travels 32 kilometers during the

first 2 hours. Then, the cyclist travels 13 kilometers during the

next hour. The average speed of the cyclist is the total distance

divided by the total time.

• Total distance = 32 km + 13 km = 45 km

• Total time= 2 h + 1 h = 3 h

• Average speed = 45 km/3 h = 15 km/h

Calculate What

Whatwould

wouldthe

thecyclist’s

cyclist’saverage

averagespeed

speedbe

beififhe

heororshe

sherode

rode60

60kilometers

kilometersinin

hours?11

How Do You Calculate

Average Speed?

• To calculate average speed, divide the total distance traveled

by the total time.

• For example, suppose a cyclist travels 32 kilometers during the

first 2 hours. Then, the cyclist travels 13 kilometers during the

next hour. The average speed of the cyclist is the total distance

divided by the total time.

• Total distance = 32 km + 13 km = 45 km

• Total time= 2 h + 1 h = 3 h

• Average speed = 45 km/3 h = 15 km/h

Calculate What

Whatwould

wouldthe

thecyclist’s

cyclist’saverage

averagespeed

speedbe

beififhe

heororshe

sherode

rode60

60kilometers

kilometersinin

hours?11

3.
TEKS 6.8C: Calculate average speed using distance and time measurements.

What Is Instantaneous Speed?

• Instantaneous speed is the rate at which an object is moving

at a given instant in time.

• A cyclometer can calculate both average and instantaneous

speed.

Compareand

andContrast

Contrast Explain

Explainwhy

whythe

theinstantaneous

instantaneousspeed

speedand

andthe

the

averagespeed

speedshown

shownare

aredifferent.

different.

What Is Instantaneous Speed?

• Instantaneous speed is the rate at which an object is moving

at a given instant in time.

• A cyclometer can calculate both average and instantaneous

speed.

Compareand

andContrast

Contrast Explain

Explainwhy

whythe

theinstantaneous

instantaneousspeed

speedand

andthe

the

averagespeed

speedshown

shownare

aredifferent.

different.