Transcript Forces and Motion Review Define Force

A
push or pull on an object
 Total
amount of force applied to an object
W=20kg * 9.8m/s²
W= 196N
 Newton
F=MA
F= 1400 * 4.7
F= 6,580 N
 Static
 Rolling
 Sliding
 Fluid
 Gravity
and air resistance
 Fluid
friction
 The
object is no longer accelerating; force of
gravity is equal to the force of air resistance
120N=60kg* a
120/60=a
20m/s²=a
 An
object in which the only force acting is
gravity
 F=MA
 F=30,400
* 1.2m/s²
 F=36,480 N
 Law
of Inertia
 Resistance
of an object to change its motion
 The
magnitude (strength)
 The
head of the arrow points in the direction
of the force
 Motion
is unchanged if the force is balanced
 The
distance traveled over a certain amount
time
 Speed
is a scalar quantity (magntude only)
and velocity is magnitude and direction
 The
acceleration increases
 The
greater the mass the greater the inertia
 The
rougher the surface the greater the
friction
 300/50
T=6 hrs
 Increase
the mass
 Reaction
forces are of equal force to the
action but in opposite direction
 It
changes the speed or direction
F=M*A
F= 7 * 9.8
F=68.6 N