Question

17.
A ball is thrown from ground level so as to just clear
a wall 4 metres high at a distance of 4 m. and falls at
a distance of 14 m. from the wall, then the magnitude
of the velocity of the ball is-
(1) 281 m/sec
(2) 1812 m/sec
(3) V182 m/sec
(4) None of the above​

Answer 1

wall is 4 m high and 4 m away mean the angle made is 45°

now the formula for maximum range as angle is 45

=u²/g

14=u²/10

u=√140

u=11.93 m/sec

option d none of these