Cracking the SAT Physics Subject Test

(Marvins-Underground-K-12) #1

Energy and the
Speed of Light
The kinetic energy needed
to bring a small mass
to the speed of light is
infinite. The relationship
between increasing
energy and increasing
speed is not consistent:
for example, even though
the shift in acceleration
from 299,000,000 m/s
to 299,000,001 m/s and
from 20 m/s to 21 m/s is a
1 m/s change, the former
requires far more energy.

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