Question 15
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A particle is projected vertically upwards from the ground with speed 30 ms-1.
Calculate the :(i) maximum height reached by the particle;
(ii) time taken by the particle to return to the ground;
(iii) time(s) taken for the particle to attain a height of 40 m above the ground.
[Take g = 10 ms-2]
Observation
The Chief Examiner reported that this question was more popular than question 14 was. Majority of them choose this question and they performed well in it.