A tennis ball is thrown straight up and caught at the same height. Which of the following can describe the motion of the ball when it reaches the apex?a)The velocity of the ball is zero.b)The acceleration of the ball is zero.c)The acceleration of the ball is 9.8 m/s2 downd)The acceleration of the ball is 9.8 m/s2 up.Correct answer is option 'A,C'. Can you explain this answer?

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A tennis ball is thrown straight up and caught at the same height. Which of the following can describe the motion of the ball when it reaches the apex?

a)
The velocity of the ball is zero.
b)
The acceleration of the ball is zero.
c)
The acceleration of the ball is 9.8 m/s² down
d)
The acceleration of the ball is 9.8 m/s² up.

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

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A tennis ball is thrown straight up and caught at the same height. Whi...

When the ball is at its peak possible position, it's velocity remains Zero. Unfortunately, this moment of zero velocity is hardly visible, since it occurs in a very very short amount of time.
Now if you ask about the acceleration at the peak possible position, it turns out to be very interesting. The acceleration remains 9.81 ms^-2. In fact it is one of the very rare situations where the body is accelerated, still there is an absolute zero velocity.

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A tennis ball is thrown straight up and caught at the same height. Whi...

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A tennis ball is thrown straight up and caught at the same height. Whi...

Opt a is correct becoz when it reaches apex then its velocity will be zero then after that it will start falling

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The University Grants Commissions directive to college and university lecturers to spend a minimum of 22 hours a week in direct teaching is the product of budgetary cutbacks rather than pedagogic wisdom. It may seem odd, at first blush, that teachers should protest about teaching a mere 22 hours. However, if one considers the amount of time academics require to prepare lectures of good quality as well as the time they need to spend doing research it is clear that most conscientious teachers work more than 40 hours a week. In university systems around the world lecturers rarely spend more than 12 to 15 hours in direct teaching activities a week. The average college lecturer in India does not have any office space. If computers are available, internet connectivity is unlikely Libraries are poorly stocked.Now the UGC says universities must implement a complete freeze on all permanent recruitment, abolish all posts which have been vacant for more than a year and cut staff strength by 10%. And it is in order to ensure that these cutbacks do not affect the quantum of teaching that existing lecturers are being asked to work longer. Obviously, the quality of teaching and academic work in general will decline. While it is true that some college teachers do not take their classes regularly, the UGC and the institutions concerned must find a proper way to hold them accountable.An absentee teacher will continue to play truant even if the number of hours he is required to teach goes up. All of us are well aware of the unsound state that the Indian higher education system is in today.Thanks to years of sustained financial neglect, most Indian universities and colleges do no research worth the name. Even as the number of students entering colleges has increased dramatically, public investment in higher education has actually declined in relative terms. Between 1985 and 1997, when public expenditure on higher education as a percentage of outlays on all levels of education grew by more than 60% in Malaysia and 20% in Thailand, India showed a decline of more than 10%.Throughout the world, the number of teachers in higher education per million population grew by more than 10% in the same period; in India it fell by 1% Instead of transferring the burden of government apathy on to the backs of the teachers, the UGC should insist that the needs of the countrys university system are adequately catered for.Which of the following statements is not true in the context of the passage?

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The University Grants Commissions directive to college and university lecturers to spend a minimum of 22 hours a week in direct teaching is the product of budgetary cutbacks rather than pedagogic wisdom. It may seem odd, at first blush, that teachers should protest about teaching a mere 22 hours. However, if one considers the amount of time academics require to prepare lectures of good quality as well as the time they need to spend doing research it is clear that most conscientious teachers work more than 40 hours a week. In university systems around the world lecturers rarely spend more than 12 to 15 hours in direct teaching activities a week. The average college lecturer in India does not have any office space. If computers are available, internet connectivity is unlikely Libraries are poorly stocked.Now the UGC says universities must implement a complete freeze on all permanent recruitment, abolish all posts which have been vacant for more than a year and cut staff strength by 10%. And it is in order to ensure that these cutbacks do not affect the quantum of teaching that existing lecturers are being asked to work longer. Obviously, the quality of teaching and academic work in general will decline. While it is true that some college teachers do not take their classes regularly, the UGC and the institutions concerned must find a proper way to hold them accountable.An absentee teacher will continue to play truant even if the number of hours he is required to teach goes up. All of us are well aware of the unsound state that the Indian higher education system is in today.Thanks to years of sustained financial neglect, most Indian universities and colleges do no research worth the name. Even as the number of students entering colleges has increased dramatically, public investment in higher education has actually declined in relative terms. Between 1985 and 1997, when public expenditure on higher education as a percentage of outlays on all levels of education grew by more than 60% in Malaysia and 20% in Thailand, India showed a decline of more than 10%.Throughout the world, the number of teachers in higher education per million population grew by more than 10% in the same period; in India it fell by 1% Instead of transferring the burden of government apathy on to the backs of the teachers, the UGC should insist that the needs of the countrys university system are adequately catered for.Which of the following is the reason for the sorry state of affairs of the Indian Universities as mentioned in the passage?

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The University Grants Commissions directive to college and university lecturers to spend a minimum of 22 hours a week in direct teaching is the product of budgetary cutbacks rather than pedagogic wisdom. It may seem odd, at first blush, that teachers should protest about teaching a mere 22 hours. However, if one considers the amount of time academics require to prepare lectures of good quality as well as the time they need to spend doing research it is clear that most conscientious teachers work more than 40 hours a week. In university systems around the world lecturers rarely spend more than 12 to 15 hours in direct teaching activities a week. The average college lecturer in India does not have any office space. If computers are available, internet connectivity is unlikely Libraries are poorly stocked.Now the UGC says universities must implement a complete freeze on all permanent recruitment, abolish all posts which have been vacant for more than a year and cut staff strength by 10%. And it is in order to ensure that these cutbacks do not affect the quantum of teaching that existing lecturers are being asked to work longer. Obviously, the quality of teaching and academic work in general will decline. While it is true that some college teachers do not take their classes regularly, the UGC and the institutions concerned must find a proper way to hold them accountable.An absentee teacher will continue to play truant even if the number of hours he is required to teach goes up. All of us are well aware of the unsound state that the Indian higher education system is in today.Thanks to years of sustained financial neglect, most Indian universities and colleges do no research worth the name. Even as the number of students entering colleges has increased dramatically, public investment in higher education has actually declined in relative terms. Between 1985 and 1997, when public expenditure on higher education as a percentage of outlays on all levels of education grew by more than 60% in Malaysia and 20% in Thailand, India showed a decline of more than 10%.Throughout the world, the number of teachers in higher education per million population grew by more than 10% in the same period; in India it fell by 1% Instead of transferring the burden of government apathy on to the backs of the teachers, the UGC should insist that the needs of the countrys university system are adequately catered for.Which of the following statements is not true in the context of the passage?

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A tennis ball is thrown straight up and caught at the same height. Which of the following can describe the motion of the ball when it reaches the apex?a)The velocity of the ball is zero.b)The acceleration of the ball is zero.c)The acceleration of the ball is 9.8 m/s2 downd)The acceleration of the ball is 9.8 m/s2 up.Correct answer is option 'A,C'. Can you explain this answer?

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A tennis ball is thrown straight up and caught at the same height. Which of the following can describe the motion of the ball when it reaches the apex?a)The velocity of the ball is zero.b)The acceleration of the ball is zero.c)The acceleration of the ball is 9.8 m/s2 downd)The acceleration of the ball is 9.8 m/s2 up.Correct answer is option 'A,C'. Can you explain this answer? for EmSAT Achieve 2025 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about A tennis ball is thrown straight up and caught at the same height. Which of the following can describe the motion of the ball when it reaches the apex?a)The velocity of the ball is zero.b)The acceleration of the ball is zero.c)The acceleration of the ball is 9.8 m/s2 downd)The acceleration of the ball is 9.8 m/s2 up.Correct answer is option 'A,C'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A tennis ball is thrown straight up and caught at the same height. Which of the following can describe the motion of the ball when it reaches the apex?a)The velocity of the ball is zero.b)The acceleration of the ball is zero.c)The acceleration of the ball is 9.8 m/s2 downd)The acceleration of the ball is 9.8 m/s2 up.Correct answer is option 'A,C'. Can you explain this answer?.

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