Third Law of Motion
What is newtons third law of motion ?
when one object exerts a force on a second object the second object exerts a force on the first object that is equal in strength and opposit in direction
When you jump on a trampoline, what direction is the force do you exert on it?
downward force
What unit is used to measure force?
Newtons
Suppose you are holding a softball. do you exert force on the softball when you throw it; yes or no?
yes
What happens when an action force is applied in nature?
reaction force occurs at the same time
100 N of force is applied to a wall. What is the force in the opposite direction?
100 N
Does a rocket engine exert force on the gases and cause them to escape out the back of the rocket; yes or no?
yes
Do action and reaction forces cancel each other out?
no, they do not cancel.
If a 275 pound lineman hits you with a force of 175 N, what is the force you exert back?
175 N
If you pushed against a wall wearing roller skates, what would happen?
You would go rolling backwards.
If a one skater is pulling upward, while the other skater is pulling downward and the forces are equal, what directions are they pulling?
opposite
How many Newtons are in an item that weighs 10 pounds?
44.5 N
What kinds of forces happen when two objects collide?
equal and opposite forces
In the case of a swimmer, as she acts on the water, where does the reaction of the water push her?
forward
Forces always act in ________ and in _________ directions.
pairs, opposite