Parabolic trajectories Show that the two-dimensional trajectory x ( t ) = u 0 t + x 0 and y ( t ) = − g t 2 2 + v 0 t + y 0 , for 0 ≤ t ≤ T , of an object moving in a gravitational field is a segment of a parabola for some value of T > 0. Find T such that y ( T ) = 0.
Parabolic trajectories Show that the two-dimensional trajectory x ( t ) = u 0 t + x 0 and y ( t ) = − g t 2 2 + v 0 t + y 0 , for 0 ≤ t ≤ T , of an object moving in a gravitational field is a segment of a parabola for some value of T > 0. Find T such that y ( T ) = 0.
Solution Summary: The author calculates the value of t from x(t)=u_0t+x
Parabolic trajectories Show that the two-dimensional trajectory x(t) = u0t + x0 and
y
(
t
)
=
−
g
t
2
2
+
v
0
t
+
y
0
, for 0 ≤ t ≤ T, of an object moving in a gravitational field is a segment of a parabola for some value of T > 0. Find T such that y(T) = 0.
Write the given third order linear equation as an equivalent system of first order equations with initial values.
Use
Y1 = Y, Y2 = y', and y3 = y".
-
-
√ (3t¹ + 3 − t³)y" — y" + (3t² + 3)y' + (3t — 3t¹) y = 1 − 3t²
\y(3) = 1, y′(3) = −2, y″(3) = −3
(8) - (888) -
with initial values
Y
=
If you don't get this in 3 tries, you can get a hint.
Question 2
1 pts
Let A be the value of the triple integral
SSS.
(x³ y² z) dV where D is the region
D
bounded by the planes 3z + 5y = 15, 4z — 5y = 20, x = 0, x = 1, and z = 0.
Then the value of sin(3A) is
-0.003
0.496
-0.408
-0.420
0.384
-0.162
0.367
0.364
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