Fundamental forces
What is the strongest fundamental force?
The strong force
Who formulated the three basic laws of motion?
Sir Isaac Newton
What causes a change in motion of an object?
Unbalanced force
How do you calculate average speed?
S=d/t
What is an object with the tendency to keep doing what it’s doing and resist change in motion called?
Inertia
What is the weakest of the four fundamental forces?
The gravitational force
What law states for every action there is an equal and opposite reaction?
Newton’s third law
What are two forces acting in opposite directions on an object, and equal in size?
Balanced forces
What is a way of measuring how quickly something is moving or being done?
Speed
What is a force that causes a moving object to slow down when it touches another object called?
Friction
What two forces are both attractive and repulsive?
The weak force and the electromagnetic force
The acceleration of an object is dependent on what two variables?
A. The net force
B. The mass of the object
What is force measured in?
Newtons
What is the rate at which an object changes position in a specific direction?
Velocity
What two fundamental forces have infinite range?
Gravitational and electromagnetic force
What force is responsible for beta decay?
Weak force
What is Newton’s first law also known as?
The law of inertia
What is a force that is applied to an object by a person or another object called?
Applied force
What is the rate at which an object changes its speed or direction?
Acceleration
What is earth’s downward pull called?
Gravity
What force is responsible for molecules in fluids sticking together?
Electromagnetic force
What is the formula for Newton’s second law?
F=MxA
What is the net force?
The combination of all forces
What is the formula for acceleration?
a=v(finish)-v(start)/t
What is the formula for momentum?
P=mv