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combining forces
Combining forces
Grade-8
may 28,2020
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Science
Secondary Education
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Combining forces
Grade-8
may 28,2020
Slide 1 - Slide
INSTRUCTIONS
Keep camera and mics mute
submit your attendance in forms
Maintain online decorum
Slide 2 - Slide
Slide 3 - Slide
RECALL
A push or pull is called a force
The unit for force is Newtons N
Slide 4 - Slide
Slide 5 - Slide
Slide 6 - Slide
Slide 7 - Slide
Slide 8 - Slide
Balanced and unbalanced forces
The sum of the forces acting on an object is called the net force.
if the net force is zero, and the object is not in motion then it is balanced motion
Slide 9 - Slide
If the net force acting on a object is not 0, the forces acting on a object are unbalanced
Slide 10 - Slide
Which could be the net force acting on an object when the forces are balanced?
A
-10 N
B
O N
C
2 N
D
10 N
Slide 11 - Quiz
Which type of force(s) will cause a change in an object's motion?
A
friction
B
zero net force
C
balanced forces
D
unbalanced forces
Slide 12 - Quiz
What is the net force acting in the given image ?
A
22 N right
B
2 N right
C
2N left
D
22 N left
Slide 13 - Quiz
What is the net force acting on the couch?
A
25 N to the right
B
20 N to the right
C
45 N to the right
D
5 N to the left
Slide 14 - Quiz
What is the net force acting on the football?
A
125 N
B
200 N
C
75 N
D
50 N
Slide 15 - Quiz
What is the net force on this box?
A
10 N to the right
B
90 N to the left
C
10 N to the left
D
290 N to the left
Slide 16 - Quiz
Name any three things you learnt today
Slide 17 - Mind map
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