Translational Kinetic Energy
AP Physics C Mechanics · Flashcards · Application
AP PHYSICS C MECHANICS · FLASHCARDS
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QUESTION
Calculate the mass:
K
E
=
18
J
KE = 18 \text{ J}
K
E
=
18
J
,
v
=
3
m/s
v = 3 \text{ m/s}
v
=
3
m/s
.
QUESTION
What is the kinetic energy of a
2
kg
2 \text{ kg}
2
kg
object at
5
m/s
5 \text{ m/s}
5
m/s
?
QUESTION
Calculate kinetic energy:
m
=
8
kg
m = 8 \text{ kg}
m
=
8
kg
,
v
=
7
m/s
v = 7 \text{ m/s}
v
=
7
m/s
.
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ANSWER
K
E
=
196
J
KE = 196 \text{ J}
K
E
=
196
J
. Using
K
E
=
1
2
(
8
)
(
7
2
)
=
1
2
(
8
)
(
49
)
=
196
KE = \frac{1}{2}(8)(7^2) = \frac{1}{2}(8)(49) = 196
K
E
=
2
1
(
8
)
(
7
2
)
=
2
1
(
8
)
(
49
)
=
196
J.
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