Which of the following types of motion cannot describe the motion of a clockandrsquo;s hands?a)Rectilinearb)Circularc)Periodicd)HarmonicCorrect answer is option 'A'. Can you explain this answer?

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ACT Exam > ACT Questions > Which of the following types of motion cannot...

Which of the following types of motion cannot describe the motion of a clock’s hands?

a)
Rectilinear
b)
Circular
c)
Periodic
d)
Harmonic

Correct answer is option 'A'. Can you explain this answer?

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Which of the following types of motion cannot describe the motion of a...

The hands of a clock move in a circular manner. Hence, the motion exhibited is circular motion. Moreover, it happens periodically, so it is also periodic motion. But its is not rectilinear motion.

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Directions:Read the passage and choose the best answer to each question.PassageScientists theorize that the release of X-rays by distant stars and the amount of distortion or “bending” the X-rays endure as they travel out of their solar system can help indicate the presence of planets orbiting these stars. The distortion of the X-rays would be caused by the gravitational pull exerted by the planets. Speciﬁcally, high ‘bending’ in these rays would indicate the presence of large planets, while a low level of bending would most likely signify the presence of smaller planets.In addition to determining whether or not there are planets circling a distant star, the amount of X-ray distortion can determine the planets’ orbital pattern. A circular orbit produces increasing or decreasing distortions of the same level.For instance, if a star’s X-rays are bent 1 meter the ﬁrst day, 2 meters the fourth day, 4 meters the seventh day, and so on, it indicates a circular orbit. See Figure 1. If however, the pattern of bending is random, as in a bending of 5 meters the ﬁrst day, 3 meters the second day, 0 meters the third day, and 7 meters the fourth day, then the planet’s orbit is elliptical. See Figure 2. Further, if the paths of the X-rays are not bent in any way, it is assumed that the star lacks any planets.Table 1 shows the amount of distortion of X-rays released by 4 different stars over a period of 10 days.Q.According to information in the passage, which of the following assumptions could be true?

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Directions:Read the passage and choose the best answer to each question.PassageScientists theorize that the release of X-rays by distant stars and the amount of distortion or “bending” the X-rays endure as they travel out of their solar system can help indicate the presence of planets orbiting these stars. The distortion of the X-rays would be caused by the gravitational pull exerted by the planets. Speciﬁcally, high ‘bending’ in these rays would indicate the presence of large planets, while a low level of bending would most likely signify the presence of smaller planets.In addition to determining whether or not there are planets circling a distant star, the amount of X-ray distortion can determine the planets’ orbital pattern. A circular orbit produces increasing or decreasing distortions of the same level.For instance, if a star’s X-rays are bent 1 meter the ﬁrst day, 2 meters the fourth day, 4 meters the seventh day, and so on, it indicates a circular orbit. See Figure 1. If however, the pattern of bending is random, as in a bending of 5 meters the ﬁrst day, 3 meters the second day, 0 meters the third day, and 7 meters the fourth day, then the planet’s orbit is elliptical. See Figure 2. Further, if the paths of the X-rays are not bent in any way, it is assumed that the star lacks any planets.Table 1 shows the amount of distortion of X-rays released by 4 different stars over a period of 10 days.Q.Which of the following statements is best supported by information in the passage?

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A body is moving in a vertical circular motion. Which one of the following forces does it not experience?

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Which of the following types of motion cannot describe the motion of a clock’s hands?a)Rectilinearb)Circularc)Periodicd)HarmonicCorrect answer is option 'A'. Can you explain this answer?

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