
Aircraft
Trajectory Activity
If so instructed by your teacher, print out a worksheet page for
these problems.
UNIT ANALYSIS:
In the table on the worksheet, give the correct units in both the English
and the Metric systems.
QUANTITY

ENGLISH

METRIC

time

__________________

__________________

distance

__________________

__________________

mass

__________________

__________________

force

__________________

__________________

velocity

__________________

__________________

acceleration

__________________

__________________

PROBLEMS:
Solve the following problems and show your work in the space provided. (Don't
forget to label your answer with the proper units.)
 An airplane begins
its takeoff run at a speed of 40 knots. If the runway is 6,000 ft long
and it takes 20 seconds to reach liftoff speed, what acceleration must
the pilot maintain for takeoff? (One Knot=1.69 ft/sec.)
 An 8,200 kg airplane
touched its runway at 65 m/s and came to a stop in 25 seconds.
Find (A) negative acceleration and (B) the length of the runway.
 A 9,600 lb airplane
takes off at 160 ft/sec. If it accelerates at a constant rate of 30
ft/sec^{2}:
 How
much time is needed to reach takeoff speed?
 What is the
length of the airstrip?
 What force
is needed to produce this acceleration?
 A military airplane
flying at a speed of 350 m/s must make a supply drop. The pilot releases
the supply crate 2,400 m before the drop target. How long will it take
for the crate to hit the ground?
