Question

A crop survey drone has a speed in still air of 30kmh?1. It is
pointed in the direction of the bearing 65?, but there is a wind
blowing at a speed of 10kmh?1 from the south-east.

Take unit vectors i to point east and j to point north.

(a) Express the velocity d of the drone relative to the still air
and the velocity w of the wind in component form, giving numerical
values in kmh?1 to two decimal places. [7]

(b) Express the resultant velocity v of the drone in component form, giving numerical values in kmh?1 to two decimal places. [3]

(c) Hence ?nd the magnitude and direction of the resultant velocity v of the drone, giving the magnitude in kmh?1 to two decimal places and the direction as a bearing to the nearest degree.

Answer #1

An
aircraft has a cruising speed of 100m/s. On this particular day,
wind id blowing toward the east at 75.0m/s.
a) If the plane pointed due north, what is the
magnitude&direction of the velocity relative to the
ground?
b) If pilot wishes the plane to travel due north, determine
the direction the plane should initially be pointed. Could you
please include the degree and direction like [W of N]?
c) If the plane travelled due north as shown in part...

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do all five questions
Question 1
20 pts
Ignoring the effects of air resistance, if a ball falls freely
toward the ground, its total mechanical energy
Group of answer choices
increases
remains the same
not enough information
decreases
Flag this Question
Question 2
20 pts
A child jumps off a wall from an initial height of 16.4 m and lands
on a trampoline. Before the child springs back up into the air the
trampoline compresses 1.8 meters. The spring constant...

Question 1
Science affecting our daily lives is exemplified by:
relying on hunches to solve crimes.
using DNA evidence in criminal investigations.
seeking the help of people with psychic visions in police
work.
relying entirely on preconceptions to identify people who may
have committed crimes.
4 points
Question 2
When an object’s velocity changes, which of the following must
have occurred?
A unbalanced force acted on the object.
An balanced force acted on the object.
The object started to deviate...

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