PROBLEM 11.111 (Continued)
PROBLEM 11.112
A model rocket is launched from Point A with an initial velocity v0 of
75 m/s. If the rocket’s descent parachute does not deploy and the
rocket lands a distance d 100 m from A, determine (a) the angle
that v0 forms with the vertical, (b) the maximum height above Point A
reached by the rocket, and (c) the duration of the flight.
PROBLEM 11.112 (Continued)
PROBLEM 11.113
The initial velocity
v
0
of a hockey puck is 105 mi/h. Determine (a) the largest value (less than 45°) of
the angle
for which the puck will enter the net, (b) the corresponding time required for the puck to reach
the net.
PROBLEM 11.113 (Continued)
PROBLEM 11.114
A worker uses high-pressure water to clean the inside of a long drainpipe. If the water is discharged with an
initial velocity
v
0
of 11.5 m/s, determine (a) the distance d to the farthest Point B on the top of the pipe that the
worker can wash from his position at A, (b) the corresponding angle
.
PROBLEM 11.114 (Continued)
PROBLEM 11.115
An oscillating garden sprinkler which
discharges water with an initial velocity
v
0
of 8 m/s is used to water a vegetable
garden. Determine the distance d to the
farthest Point B that will be watered and
the corresponding angle
when (a) the
vegetables are just beginning to grow,
(b) the height h of the corn is 1.8 m.
PROBLEM 11.115 (Continued)
PROBLEM 11.116*
A nozzle at A discharges water
with an initial velocity of 36 ft/s at
an angle with the horizontal.
Determine (a) the distance d to the
farthest point B on the roof that the
water can reach, (b) the
corresponding angle Check
that the stream will clear the edge
of the roof.
.