Graph Energy and Mass
Middle School Physical Science · Flashcards
MIDDLE SCHOOL PHYSICAL SCIENCE · FLASHCARDS
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QUESTION
If
v
v
v
is constant at
4
m/s
4\,\text{m/s}
4
m/s
, what is the slope of the
K
E
KE
K
E
vs.
m
m
m
graph?
QUESTION
Calculate
K
E
KE
K
E
for
m
=
4
kg
m=4\,\text{kg}
m
=
4
kg
and
v
=
3
m/s
v=3\,\text{m/s}
v
=
3
m/s
.
QUESTION
If
K
E
=
40
J
KE = 40\,J
K
E
=
40
J
at
m
=
5
k
g
m = 5\,kg
m
=
5
k
g
, what is the constant speed
v
v
v
?
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ANSWER
v
=
4
m
/
s
v = 4\,m/s
v
=
4
m
/
s
. From
40
=
1
2
(
5
)
v
2
40 = \frac{1}{2}(5)v^2
40
=
2
1
(
5
)
v
2
, we get
v
2
=
16
v^2 = 16
v
2
=
16
, so
v
=
4
m
/
s
v = 4\,m/s
v
=
4
m
/
s
.
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