[填空题]
A projectile is fired with an initial speed of at an angle psp- y-v5 hgh;of 34ff bnp8+4cea ..5$^{\circ}$ above the horizontal on a long flat firing range. Determine
(a) the maximum height reached by the projectile, m
(b) the total time in the air, s
(c) the total horizontal distance covered (that is, the range), and m
(d) the velocity of the projectile 1.50 s after firing. m/s