Answer:
a fluid ounces
Step-by-step explanation:
Answer:
Not sure
Step-by-step explanation:
But is this a maths question?
its either a or d but positive its a
The derivative of height with respect to time is
h'(t) = -32t +v
This will be zero when
0 = -32t +v
t = v/32
The height at this time is
h(v/32) = -16(v/32)² + v(v/32) = (v²)(-1/(2·32) +1/32) = v²/64
Setting this to 400, we get
400 = v²/64
v = √(64·400) = 160
The initial velocity required so that the maximum height is exactly 400 feet is
160 ft/s.