Question

During take off an airplane goes from 0 to 84 m/s in 15s

A)what is the acceleration? m/s^

B) How fast is it going after 4s? m/s

C) how far has it traveled by the time it reaches 84 m/s? m

Answer #1

Due to their short runway, airplanes that take off from an
aircraft carrier often need to utilize a "catapult system" to get
them above stall speed. While attached to the catapult, an airplane
has position as a function of x(t)=bt^2-ct^3, spending a
total time T being launched. How fast is the airplane going at the
end of the launch? you may use b=29m/s^2, c=3m/s^2, T=3s (t and
T are different) please show work

Instructions: Please answer each of the following questions. You
must show all work using correct formulas and units. Please show
supporting work and verbal explanation.
3. During takeoff, an airplane goes from 0 m/s to 50 m/s in 8
s.
a) What is its acceleration?
b) How fast is it going after 5 s?
4. An object has an initial velocity of 15 m/s and a constant
acceleration of 4 m/s2. How long will it take before its
final velocity...

I drop a ball from rest off a really high cliff. Assume
g is -10 m/s2. (a) How fast and in what direction does the ball go
after 2 seconds? (b) What is the ball’s acceleration after 2
seconds of fall? (c) But why?! The ball is going 20 m/s after 2
seconds, so why is its acceleration a different
value??

A basketball is shot from a height of 2 m at a speed of 4.9 m/s.
How fast is it going as it reaches the height of the rim, which is
10 ft high? Answer in m/s. Hint: try using energy rather than
freefall acceleration.

a
car starts from rest and travels 8.0s with a uniform acceleration
of +2.0 m/s^2. the driver then applies the brakes, causing a
uniform acceleration of -3.0 m/s^2. if the brakes are applied for
5.0s, determine each of the following.
a. how fast is the car going at the end of the braking
period?
b. how far has the car gone?

A Cessna 150 airplane has a takeoff speed of 20.8 m/s. Determine
the minimum length of the runway which would be required for the
plane to take off if its acceleration is 1.9 m/s2.

A jet starts from rest at t0 = 0 s and travels along the runway
with a constant horizontal acceleration of 1.6 m/s2 . It reaches
its liftoff speed of 80 m/s and takes off.
a. What is the minimum runway length Lmin needed for the jet to
lift off starting from rest?
Lmin =
b. How long does it take to lift off from rest?
t1 - t0 =
c. What is the average velocity of the jet from...

A
car initially traveling with a velocity if 12 m/s accelerates at a
constant rate of 2.5 m/s^2 for 2 seconds.
A) will this car cover more or less ground in 2 seconds than a
second car initially moving at 12m/s but no acceleration ?
B) how far is this car moving after 2seconds ?
C) how far has it traveled during the 2 second interval
?

at
take-off, the horizontal and vertical velocity of a long jumper are
7 and 5.2 m/s. what is her angle of take off and how far does she
jump? explain how you calculated this please

A car starts from rest and travels for 7.5 s with a uniform
acceleration of +2.8 m/s2. The driver then applies the
brakes, causing a uniform acceleration of −2.5 m/s2.If
the brakes are applied for 1.0 s, determine each of the
following.
(a) How fast is the car going at the end of the braking period?
m/s
(b) How far has the car gone? m

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