Net Force
The sum of all forces acting on an object.
Net Force
Objects in motion stay at rest or in motion unless acted upon by what?
an unbalanced or outside force
A change in velocity
Acceleration
For every action there is an _________ and ________ reaction
Equal and opposite
The mass of an object is 2KG and the acceleration is 4m/s². What is the force
Force = 8N
Equal in size and opposite in direction
Balanced Force
The resistance of change in motion
Inertia
The formula used for calculating force
F=MxA
pairs
The mass of the object is 25kg and the acceleration is 4m/s². What is the force on the object?
f= 100N
Causes a change in the motion of an object
Unbalanced Force
What would happen to motion if friction did not exist
any object in motion would continue in motion at the same speed and direction
Push or pull of an object
What do force pairs always act on?
Different objects
A force of 15 N is applied to an object and causes it to accelerate to 3 m/s². What is the mass of the object?
m=5 kg
7N to the left and 6N to the right
1N to the left
Two objects rubbing together
Friction
What does acceleration depend on
Mass of an object and the size of the force
True or False
When objects collide, the forces are equal
True
A ball has a mass of 9 kg and rolls towards the wall with a force of 18 N. What is the acceleration of the ball when it hits the wall?
a= 2 m/s²
10N to the right and 5N to the right
15N to the right
A force caused by air, acting in the opposite direction of a moving object.
Air Resistance
Speed in any given direction
Velocity
Forces that act on different objects that are of equal strength that are opposite in direction.
Action and reaction pairs
A 300 N force is applied to an abject with a mass of 60 KG. What is the acceleration of the object when the force is applied?
A=50 m/s²