August 29, 2016
How force and mass affect
motion of objects
therefore, speed is the rate of change of
the position of an object, or how far
something will move in a given period of
time.
speed = distance / time
Speed
a measure of how fast something
moves a particular distance
(meters) over a given amount of
time (seconds)
Force
If a ball is moving, and a force is
applied to it, it will speed up
or
S = d/t
If two objects are the same mass, and
different forces are applied to them
The object that receives the greater
force will speed up faster, and the
object that receives the lesser force
will not speed up as fast
How do you slow down an
object that is moving?
to slow down an object fast that is moving, the
force applied to it must be greater than the
force that is needed to gradually slow it down
August 29, 2016
Examples
Mass
Varying the amount of force applied to moving
objects can also determine whether the object
will change direction slowly or quickly
If a heavy or more massive object is in motion,
a bigger force must be applied to the object to
get it to move
Example: that is why it is hard to move
those sumo wrestlers out of that circle
If the same force is applied to two objects
that are different masses, one bigger and
one smaller, the smaller object will speed up
more quickly
Example
What would it take to
slow down or stop a
heavier object?
To slow down or stop a heavier
object, the force must be greater
than what it would to slow down a
smaller object
August 29, 2016
Examples
Which object will be easier to change
direction, a more massive or less
massive object?
A less massive object will change
direction easier than a more massive
object.
Examples
A
Force of 10 N
B
Force of 25 N
Which baseball would speed up faster,
assuming they are the same mass?
Force of 200 N
Which of these two objects will
change direction quicker?
Force of 250 N
Assuming these cars are the same exact
mass, which car will change direction
slower?
August 29, 2016
Which of these two objects will it
take more force to slow down?