Question Number 32191 by ajfour last updated on 21/Mar/18
Commented by ajfour last updated on 21/Mar/18
$${Find}\:{maximum}\:{distance}\:{from} \\ $$$${foot}\:{of}\:{building}\:{where}\:{projectile} \\ $$$${can}\:{land}.\:\left({Ignore}\:{air}\:{resistance}\right). \\ $$
Answered by Tinkutara last updated on 21/Mar/18
$$\frac{{u}}{{g}}\sqrt{{u}^{\mathrm{2}} +\mathrm{2}{gH}} \\ $$
Commented by ajfour last updated on 21/Mar/18
$${right}\:{but},\:{process}\:? \\ $$
Commented by Tinkutara last updated on 21/Mar/18
$${Using}\:{equation}\:{of}\:{trajectory}\:{of}\:{a} \\ $$$${projectile},\:{forming}\:{a}\:{quadratic}\:{in} \\ $$$$\mathrm{tan}\:\theta,\:{then}\:{D}\geqslant\mathrm{0}. \\ $$