# Lesson 11 4.4

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Slide 1: Tekstslide
Natuurkunde / ScheikundeMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 20 slides, met tekstslides en 1 video.

## Onderdelen in deze les

#### Slide 1 -Tekstslide

This lesson
• rearranging the formula for acceleration
• speed-time graphs

#### Slide 2 -Tekstslide

Learning goals 4.4
• Rearrange the formula for acceleration
• Read a speed-time graph correctly
• Explain terminal velocity

#### Slide 3 -Tekstslide

Exercise
• Write down the formula for speed.
• What is the unit of speed?

• Write down the formula for accelration
• what is the unit of acceleration? Explain

#### Slide 4 -Tekstslide

v=td
Speed=timedistance
v: velocity
d: distance
t: time

Unit of Speed
distance/time
m/s
m/s

#### Slide 6 -Tekstslide

a=tvfvi
acceleration=timefinalspeedstartingspeed

#### Slide 7 -Tekstslide

Unit of Acceleration
• speed/time
• (m/s)/s

m/s
2

#### Slide 8 -Tekstslide

Exercise
Rearrange the formula for acceleration to calculate:
• vf
• vi
• t
a=tvfvi

#### Slide 9 -Tekstslide

• A car accelerates at a rate of 13m/s2 for 6 seconds, it reaches a speed of 128 km/h. Calculate its initial speed.

• A rocket launching  accelerates from rest a rate of 1.5 km/s2 for 8 seconds. Calculate the speed it reaches.

• A cyclist in the decelerates from 22 m/s to a speed of 37 m/s at a rate of 7,5 m/s2. Calculate the time this took.

#### Slide 10 -Tekstslide

Discussing the homework
•  Worksheet 4.4
• Workbook exercises 4.4

#### Slide 11 -Tekstslide

Speed-time graphs

#### Slide 12 -Tekstslide

Speed-time graphs

#### Slide 13 -Tekstslide

Speed-time graphs

#### Slide 14 -Tekstslide

The area under the graph

#### Slide 15 -Tekstslide

Calculate the distance traveled in this journey

#### Slide 16 -Tekstslide

Terminal velocity

#### Slide 19 -Tekstslide

Learning goals 4.4
• Rearrange the formula for acceleration
• Read a speed-time graph correctly
• Explain terminal velocity