Forces Flashcards
What is the symbol for forces?
F
What type of forces are there?
Push, pull or twist.
What units are forces in?
Newtons.
Forces can cause an object to change…
Speed, direction or shape.
Forces can be
Non-contact and contact.
Contact forces can be.
Applied(push or pull)
friction(rubbing)
Buoyancy(floating)
Non-contact forces can be.
Gravity.
Electrostatic(charged objects)
Magnetic
What is gravitation?
The force of attraction between two bodies
What is gravity?
Earth’s pull on a body lying or near the surface of the earth.
What is mass?
The amount of matter that makes up an object (never changes)
What is a Vector?
And arrow with magnitude and direction.
If forces are balanced then…
There will be no movement or the object will move at a constant speed
If the forces are unbalanced then…
There is movement.
What is the law of inertia?
Stationary objects will remain stationary unless acted upon by a force.
What is the second law of Newton’s laws of motion?
An object accelerates in the direction of net force
What is buoyancy?
Ability of the fluid to exert an upward pressure
What is surface tension?
And upward force on water that causes surface of the water to act like cling wrap.
Friction causes __________ to jump off substances which cause an imbalance of charges.
Electrons
What is friction?
Something that opposes motion and produces heat
What is Newton’s third law?
For every action there is an equal and opposite reaction.
Friction _________ with surface area.
Increases
What piece of equipment do we use to measure forces?
Spring balance.
In magnetism:
Opposite attract and likes repel
Static electricity happens when
opposite charges are attracting between objects.
Newtons 2nd law equation
F=ma
Force=mass x acceleration
acceleration is directly ________ to Net force
proportional
