# Speed

SPEED
sept 22, 2020
1 / 19
Slide 1: Tekstslide
ScienceSecondary Education

In deze les zitten 19 slides, met interactieve quizzen en tekstslides.

## Onderdelen in deze les

SPEED
sept 22, 2020

#### Slide 1 -Tekstslide

STARTER
Which car will be in first position?
and what about second and third position?

#### Slide 2 -Tekstslide

OBJECTIVES
1. Define speed
2. Differentiate constant and changing speed
3. Calculate speed

#### Slide 3 -Tekstslide

SPEED
Speed is the distance an object moves divided by the time it took to move that distance
Speed=  distance travelled /time taken

#### Slide 6 -Tekstslide

How are these two different?

#### Slide 7 -Tekstslide

Constant speed - when the distance travelled is same during each second
Changing speed- when the distance travelled is not the same during each second

#### Slide 8 -Tekstslide

What is speed?
A
How fast or slow an object moves
B
A kind of drug
C
Is moving faster and faster
D
A type of game

#### Slide 9 -Quizvraag

Identify the speed -constant or changing

#### Slide 10 -Open vraag

What are the two terms associated with speed ?
A
time, distance
B
time, direction
C
direction, distance
D
reference point, time

#### Slide 11 -Quizvraag

Identify this as constant speed or changing speed? Imagine it is the same car

RECALL

#### Slide 13 -Tekstslide

It takes Ahmed 50 s on his bicycle to reach his friend' house 250 m away. What is his average speed?

#### Slide 14 -Open vraag

A truck driver makes a trip that covers2,380 Km in 280 hours. What is the drivers' average speed?

#### Slide 15 -Open vraag

CHALLENGE -Aaron leaves one city at noon. He has to be at another city 186 km away at 3:00 P.M. The speed limit the entire way is 65 km/hr. can he arrive second city on time

#### Slide 16 -Open vraag

Challenge  - During which period did the object slow down

#### Slide 17 -Tekstslide

Which term describes the motion in the time period from 3 to 5 seconds?
A. at rest
B. constant speed
C.slowing down
D. speeding up

#### Slide 18 -Tekstslide

Two things you understood today