Types of Forces
WHAT IS A FORCE?
A force is a push or a pull.
WHAT FORCE PULLS OBJECTS TOWARD THE EARTH
IF 5 NEWTONS ARE PUSHING UPWARDS AND 2 NEWTONS ARE PUSHING TO THE LEFT, WHICH DIRECTION WOULD THE OBJECT GO?
UPWARDS (7N)
Friction is a contact force that occurs when 2 objects interact and resist movement.
A BOOK IS RESTING ON A TABLE. WHAT ARE 2 FORCES ACTING ON THE BOOK?
Gravity and normal force.
IF 7 NEWTONS ARE GOING UP, 7 NEWTONS ARE GOING DOWN, AND 2 ARE GOING TO THE RIGHT, WHICH DIRECTION WILL IT GO?
It will go to the right.
Gravity is the force that pulls everything down toward the earth.
A BALL IS ROLLING ACROSS THE FLOOR AND EVENTUALY COMES TO A STOP. WHAT FORCE CAUSES THE BALL TO SLOW DOWN AND STOP?
Friction.
IF YOU ARE ON A BOAT AND 5 NEWTONS ARE PUSHING FOWARD, AND THERE ARE 6 NEWTONS PUSHING YOU BACKWARDS, WHICH DIRECTION WOULD YOU MOVE?
You would move backwards.
WHAT IS NORMAL FORCE?
Normal force is the upward force from a surface that balances the weight of an object resting on it.
A push (applied force)
IF 4 NEWTONS ARE PUSHING FROM THE RIGHT, 4 NEWTONS ARE PUSHING FROM THE LEFT, 4 FROM THE TOP, AND 4 FROM THE BOTTOM, WHICH DIRECTION WILL THE OBJECT MOVE?
The object would not move.
WHAT IS AIR RESISTANCE?
Air resistance is a force that pushes against an object moving through the air
A BOX IS PLACED ON A SLOPE AND IT STARTS TO SLIDE DOWN. NAME 3 DIFFERENT FORCES ACTING ON THE BOX.
Gravity (pulling down)
Friction (slowing the slide)
Normal force (pushing from the slope)
IF THERE IS 12 NEWTONS PUSHING FROM THE BOTTOM, 4 FROM THE RIGHT, 6 FROM THE LEFT, AND 7 FROM THE TOP, HOW MANY NEWTONS ARE ACTING ON THE OBJECT ALL TOGETHER?
29N