
5.2 friction
Authored by Taleen Alandejani
Physics
9th Grade
Used 1+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the definition of kinetic friction ?
strength or energy as an attribute of physical action or movement.
the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
a force that acts between moving surfaces
a type of friction force that acts on a body when there is no relative motion between the object and the surface
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the definition of Static friction
a type of friction force that acts on a body when there is no relative motion between the object and the surface
the Gravitational force with which the Earth attracts the masses towards its center
the rate of change of velocity.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
the coefficient of static friction is____ than the coefficient of kinetic friction
less
equal
more
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
friction is always___ direction to motion
opposite
same
not related
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
what dos it mean when the coefficient of static is more than 1?
fn>ff
fn<ff
fn<u
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
what does the coefficient depend on ?
type of surface
normal force
composition of the material of the surface
gravity
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
which of the following
does the friction force depend on?
type of surface
weight
acceleration
gravity
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