Friction Flashcards
(16 cards)
The _______ the surface is, the greater the ________force
Rougher, friction
______ surfaces create little or __ friction force
Smooth, no
What is air resistance?
It is a form of friction that comes from contact with air. Air produces a lot of force.
Friction is a force that _______ ___ ______ __ __ ______
opposes the motion of another object
Roller coasters move due to the _____________ _____ of the earth, which acts at a ________ and _____ objects towards the centre of the earth.
Gravitational field, distance, pulls
Roller coasters move due to _____________ ________ ______ that they recieve at the peek of the first hill, the ______ of the peek determines the amount of ______ that is available for the rest of the ride.
Gravitational potential energy, height, energy
A ________ force is the result of two forces which are the same size and act in ________ directions.
Balanced, opposite
If the forces acting on an object are ________, the object will either have _______ velocity or remain __________.
Balanced, constant, stationary
An __________ force is a force acting _______ and object causing it to _____ up, ____ down or ______ shape.
Unbalanced, against, speed, slow, change
If the forces acting on an object are __________, the object will either __________ meaning an increase in velocity, or ____________ meaning a deacrease in velocity.
Unbalanced, accelerate, deaccelerate
Mas is…
And is measured in…
The actual amount of material contained in a body and is measured kg, mg e.t.c
Weight is…
And is measured in…
Is the force exerted by the gravity on that object, it is measured in newtons
What is the law of conservation of energy?
Energy can not be created or destroyed only transformed and transferred
Objects possess energy because of their ______ and because of their ________
Motion, and position
A force is a ____, ____ or _____
Push, pull or twist
Forces are classified as _______ or ___-_______
Contact or non-contact
