general knowledge
What's Newton's second law?
F=ma(w=mg)
What is a non-contact force?
A non-contact force is a force that doesn't make physical contact with any object.
What is a force?
Push, pull, or twist.
What happens if two equal forces act upon each other?
The net force is zero.
What are some examples of contact forces?
A normal force, Friction, and tension
What is the definition of drag?
A type of force that acts on an object that is moving through the air or water
What does equilibrium mean?
Balanaced
What are some examples of non-contact forces?
Gravity, magnetic force, and an electric force
Balanced forces
What is lubrication?
a substance that reduces the effect of friction.
If an object is going full speed, what force slows it down?
friction
What is a net force?
A remainder(sum)
What is Hooke's law?
A law that states that if you double an object, the extension will also double
What is air resistance, and is it a contact or non-contact force?
It is known as a drag which acts on objects as they are falling through the air, and it is a contact force.
How would you balance a helium balloon that is floating?
You would need an equal upthrust and downthrust.