JAMB Physics 2018 Objective — Question 11
Question 11 of 38 from the Joint Admissions and Matriculation Board (JAMB) Physics 2018 Objective paper, with the correct answer and a full explanation.
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If a body of mass m is thrown vertically upwards with velocity v, at what height will the potential energy be equal to the kinetic energy?
- A. u²/g
- B. u²/4gCorrect
- C. 2u²/g
- D. u²/2g
Explanation
At the point where PE=KE, each equals half the total initial KE (½mu²)/2. Setting mgh = ½(½mu²): h = u²/4g.
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