Question

A body is projected vertically upwards at time t = 0 and it is seen at a height h at time t1 and t2 second during its flight. the maximum height attained is (g is acceleration due to gravity)

Answer 1

When abody isprojected vertically upwards it occupiesthe sameposition while going upandcoming down after time of t1and t2∴21Hutgt2=−2gt2ut2H0−+=Sum of roots =()1212gtt2uttug2++=⇒=∴[]2212maxgttuH2g8+==

Answer 2

ANSWER IS IN THE IMAGE