Practice question
Question
A ball is thrown vertically upwards with a speed of 30m/s. What is the maximum height reached? (Take g\=10m/s2)
Explanation
At max height v=0. Using v²=u²-2gh from NCERT kinematics, h=u²/2g. With u=30 m/s and g=10 m/s², h=45.0 m. This matches option A (45 m). Other options do not satisfy v²=u²+2as with correct signs.