An automobile traveling on a straight, level road at 25 km/h speeds up to 70 km/h in 20 s. What was the magnitude of the auto's acceleration, in meters per second squared?
0.62 m/s2
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Nuclear Binding Energy: The neutral 
Al atom has a mass of 26.981539 u; a neutral hydrogen atom has a mass of 1.007825 u; a neutron has a mass of 1.008665 u; and a proton has a mass of 1.007277 u. What is the binding energy per nucleon for 
Al? (1 u = 931.5 MeV/c2)
A. 8.3 MeV B. 6.7 MeV C. 5.4 MeV D. 3.4 MeV E. 2.8 MeV
Compared to ultraviolet waves, the frequency of infrared waves is
A) lower. B) the same. C) higher.
According to the authors of the text, which of the following best describes how our common sense relates to the theory of relativity?
A) Relativity does not violate our common sense because we do not have common sense about motion near the speed of light. B) Relativity violates common sense because it contradicts logic. C) Relativity violates common sense because it is counterintuitive. D) Relativity violates common sense because the theory contradicts itself in many cases. E) Relativity violates common sense because it is full of paradoxes.
Simple Harmonic Motion: A 0.25 kg harmonic oscillator has a total mechanical energy of 4.1 J. If the oscillation amplitude is 20.0 cm, what is the oscillation frequency?
A. 4.6 Hz B. 1.4 Hz C. 2.3 Hz D. 3.2 Hz