h=vvertical*time-1/2 g t^2
h=0=250*.707*t-4.0t^2
t= 250*.707/4.9 seconds
range: 250cos45*timeinair.
A cannon barrel is elevated at an angle of 45°. It fires a ball with a speed of 250 m/s. (For the following questions, ignore air resistance.)
(a) What height does the ball reach?
m
(b) How long is the ball in the air?
s
(c) What is the horizontal range of the cannon?
kmp
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