Explain Kinetic Energy Changes
Middle School Physical Science · Flashcards
MIDDLE SCHOOL PHYSICAL SCIENCE · FLASHCARDS
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QUESTION
What happens to kinetic energy if speed doubles while mass stays the same?
QUESTION
Which graph shape indicates
K
E
∝
v
2
KE \propto v^2
K
E
∝
v
2
when mass is constant: straight line or curve?
QUESTION
Identify the slope meaning on a
K
E
KE
K
E
vs. mass graph when speed is constant.
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ANSWER
Slope
=
1
2
v
2
=\frac{1}{2}v^2
=
2
1
v
2
. From
K
E
=
1
2
m
v
2
KE = \frac{1}{2}mv^2
K
E
=
2
1
m
v
2
, slope equals
1
2
\frac{1}{2}
2
1
times speed squared.
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