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Les 4
Todays lesson
Types of forces
Balanced and unbalance forces
A video
Working on §1.2
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Tekstslide
Natuurkunde / Scheikunde
Middelbare school
havo, vwo
Leerjaar 1
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Todays lesson
Types of forces
Balanced and unbalance forces
A video
Working on §1.2
Slide 1 - Tekstslide
Learning goals
Give an example for each type of force.
Calculating resultant force?
What two things can balanced forces do?
What two things can unbalanced forces do?
Slide 2 - Tekstslide
The homework
Force
Change in speed
Chang in direction
Gravity acting on an apple
Friction acting on a car going a round a corner at a steady speed
Friction when a car brakes in a straight line
Slide 3 - Tekstslide
Types of Forces
Gravitational force
Friction
Thrust
Upthrust
Tension
Electrostatic force
Magnetic force
Slide 4 - Tekstslide
Thrust
The force applied by an engine
Slide 5 - Tekstslide
Thrust
The force of an engine
Slide 6 - Tekstslide
We now finished § 1.1
Slide 7 - Tekstslide
§1.2 Balanced and unbalanced forces
Balanced forces
Unbalanced forces
Resultant force
Slide 8 - Tekstslide
Resultant forces?
Slide 9 - Tekstslide
Resultant force?
Slide 10 - Tekstslide
Resultant force?
Slide 11 - Tekstslide
Calculating the resultant force
Forces in the same direction add up.
Forces in opposite direction cancel out.
Slide 12 - Tekstslide
Video — Exercise
Acceleration
Deceleration
Constant velocity
Stationary
Weight
equal
What do the words below mean?
Discuss in pairs and write down your answer
Slide 13 - Tekstslide
Acceleration
Speeding up
Decceleration
Slowing down
Constant velocity
Traveling at one speed
Stationary
Standing still
Weight
The force that pulls you to the earth
Equal
Two things being the same
Slide 14 - Tekstslide
Slide 15 - Video
Homework
The Workbook exercises of §1.2
Slide 16 - Tekstslide
Learning goals
Give an example for each type of force.
Calculating resultant force?
What two things can balanced forces do?
What two things can unbalanced forces do?
Slide 17 - Tekstslide
Slide 18 - Tekstslide
Balanced and unbalance forces
Balanced forces
Object remains stationary
Object keeps moving at a constant velocity
Unbalanced Forces
Accelerate
Decelerate
Slide 19 - Tekstslide
Homework
The Workbook exercises of §1.2
Slide 20 - Tekstslide
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