Les 4 H6 par 4 remmen botsen

• nask
• Middelbare school
• havo
• Leerjaar 2

Program;

- Look back at previous paragraphs

- Lets have a look at paragraph 4

Last time;

quantities	symb	unit	symb
speed (aka velocity)	v	kilomer p h meter p sec	km/h m/s
time	t	hours seconds	h s
distance (aka space)	s	kilometer meter	km m

v=​t​​s​​

s=v⋅t

t=​v​​s​​

Discribe in your own words what a stroboscopic is?

What are the three differtent types of motion we know?

I'm driving to school when a traffic light goes to orange and then red. I hit the breaks to stop in time.
What kind of motion is this?

1. uniform motion
2. deceleration
3. acceleration

I am waiting in front of the traffic light until it wil go to green again.
What kind of motion is this?

1. uniform motion
2. deceleration
3. acceleration

The traffic light goes to green and I drive away, but a pedestrian quickly crosses over so I hit the breaks again. What is te motion in the last part?

1. uniform motion
2. deceleration
3. acceleration

The pedestrian is out of the way and I can continue my journey.
What kind of motion is it, as i'm driving away.

1. uniform motion
2. deceleration
3. acceleration

A plane is traveling from one city to another. The duration of the flight is 1 hour and 23 minutes. The cities are 900 kilometers apart.
Calculate the average speed of the plane.

Astrid is biking to school. Her school is 7200 meters away and her average speed is 12 km/h.
How long does it take her to bike to school?

Check your work

- Use your phone or laptop to check your work  

(extra ex speed, distance and time)

- If you have not finished it yet, finish the sheet first.

Braking

- The breaking distance depends on three factors(of the thing that is breaking);

Rule for speed and breaking

If the speed is n times greater, the breaking distance becomes n^2 times longer.

What 'outside' factors influence breaking distance?

- Conditions

- Reaction time

Stopping distance

Make some excersises