Unit II: Worksheet 5 Key
Rules used on motion maps: If the strobe flash is exactly on a position where motion changed on a graph, look at the right side
of the change to decide on the velocity. If the object is moving in the same direction but placement of a position dot would
cause it to be on top of a previous dot or arrow the dot is raised. If the velocity direction changes the arrows in the new
direction are raised above the previous arrows.
Fill in the 3 empty boxes that represent the same motion as the one shown. The dashed lines on the motion graphs are to
indicate the time of the strobe flashes for the motion maps. The first flash is at zero time.
x vs. t Graph
v vs. t Graph
Written Description
Object starts the trip a
distance from zero, moves
away from zero at a medium
speed for 2.5 units of time,
stops for 3.5 units of time and
moves toward zero at a fast
speed for 2 units of time.
Object starts the trip far from
zero and moves at a fast speed
toward zero for 3 units of
time, then moves slowly away
from zero for 2.5 units of time
and then stops and remains
stationary for almost 3 units
of time.
Object starts the trip far from
zero and moves at a slow
speed toward zero for 3 units
of time, then stops and
remains stationary for 2.5
units of time and then moves
very fast toward zero for 3
units of time.
Object starts the trip at zero (it
could be started anywhere)
and does not move for 3 units
of time, then moves at a fast
speed away from zero for 2.5
units of time and then moves
slowly toward zero for 3 units
of time.
(Given)
Object moves with constant
positive velocity for 4
seconds. Then, it stops for 2
seconds and returns to the
initial position in 2 seconds.
Motion Map
A
B