No
"Yes"
If two children push a swing at the same time, will the swing go higher?
Net force
The force of gravity
Force
Gravity
What pulls you down?
No
Yes
Does a swing go higher when two children push on it rather than just one child?
No
Yes
No. (It is common.)
Is it rare for objects on Earth to have at least two forces acting on them?
Gravity and the table
The table pulls the book upwards and the earth pulls it down
Median force
Gravity
What forces acts on a book on a table?
No
Yes
Yes, all objects have two forces and a book too has force
Do all objects on Earth have force?
Gravity
Heat force
Upward force
Gravity and newtons
The force of gravity and the pull of the table
Which forces affect a book resting on a table?
Gravity, downward force
2
Two
Three
3
How many forces do you have on you right now?
Slightly above than 20 newtons
20 newtons
10 newtons
At what level of force does the table oppose gravity?
A book on a table exerts force on the table, the table exerts force on the book
Forces cannot combine together to act on an object
A table pushes up on a book on a table, and gravity pulls down
Two children pushing a swing, book resting on a table
Give two examples of combined forces action on an object
One
At least two
Two forces acting on it
3
How many forces does an object have?
Newtons
Grams
What is the unit used for force?
Downwards
Upwards
What direction is the force of a table on a book that is resting on it?
More than 20 newtons
20 newtons
10 newtons
At what level of force does gravity pull the book downwards?
"Legs"
Core
Arms
What part of one's body can hold them up against the force of gravity?
There is more gravity on the swing
Together, their force would be more
There is more force acting on the swing
Why would a swing go higher when two children push it at the same time?
It wouldn't
Gravity would push down on the book
Gravity would pull the book downward
The book would be in the air
The book would lay on the table from the force exerted
How would gravity affect a book resting on a table/
What if two children push a swing at the same time? Would the swing go higher? Yes, together their force would be more. It is common for forces to be combined. Most objects on Earth have at least two forces acting on them. Do you know what one of them is? Of course, that force is gravity. How many forces do you have on you right now? Gravity pulls you down toward the center of Earth. Your legs exert a downward force. They hold you up against the pull of gravity. Consider the example in Figure 1.3. A book is resting on a table. Gravity pulls the book downward. It has a force of 20 newtons. At the same time, the table pushes the book upward. Its force is also 20 newtons. The table opposes the pull of gravity. 