A particle moves at a constant speed in a circular path with a radius of 2.06 cm. If the particle makes four revolutions each second, what is the magnitude of its acceleration?
A. 20 m/s2
B. 18 m/s2
C. 13 m/s2
D. 15 m/s2
E. 24 m/s2
Answer: C
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What will be an ideal response?
A 7.5 kg bowling ball is dropped from the top of a 25m tall building. Ignoring air resistance, when the bowling ball hits the sidewalk below, its kinetic energy is equivalent to how many food calories (one food calorie = 1 kilocalorie in SI measure)
A. 0.44 B. 880 C. 440 D. 0.22 E. 0.88 F. 220
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Answer the following statement true (T) or false (F)