A 2.0-kg object moving 5.0 m/s collides with and sticks to an 8.0-kg object initially at rest. Determine the kinetic energy lost by the system as a result of this collision
a. 20 J
b. 15 J
c. 30 J
d. 25 J
e. 5.0 J
A
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a. parallax; beyond the orbit of Earth's Moon b. parallax; inside the Earth's atmosphere close to Earth c. light; beyond the orbit of Earth's Moon d. light; inside the Earth's atmosphere close to Earth
When railroad tracks make a curve, the outer track is longer. This means a wheel that rides on the outer track needs to somehow
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