Same chapter3 marksDifficulty: Medium
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Kinematics
3 marksDifficulty: Medium
A body is thrown vertically upwards with a speed of 30 m s−1. Find the maximum height it reaches and the time it takes to return. Take g = 10 m s−2.
Original Khojo Papers practice question — not from a past board paper.
Answer
Height 45 m and total time 6 s.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
At the highest point v = 0, so h = u2/2g = 900/20 = 45 m. The time up is u/g = 3 s and the time down is the same.
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