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A 5000kginterceptor rocket is launched at an angle of 44.7. The thrust of the rocket motor is140700N

a. Find an equation y(x)that describes the rocket鈥檚 trajectory.

b. What is the shape of the trajectory?

c. At what elevation does the rocket reach the speed of sound, 330 m/s?

Short Answer

Expert verified

a). An equation y(x)that describe the rocket's trajectory y(x)=xtan12gx2vx2

b). The rocket's trajectory is a straight line.

c). The rocket reach at the elevation of1088.46m

Step by step solution

01

Given Infromation (Part a)

A5000kginterceptor rocket is launched at an angle of 44.7. The thrust of the rocket motor is 140,700N.

02

Explanation (Part a)

we know that,

x=vxt

Vx=Vcos

Vx=(ax)(t)

Where, is the angle made by trajectory vector

Now apply the equation of motion:

y=vxt12gt2

role="math" y=(Vsin)(t)12gt2

y=ysinxvcosg2xvx2

y(x)=xtan12gx2vx2

03

Final Answer (Part a)

An equation y(x)that describe the rocket's trajectory isy(x)=xtan12gx2Vx2

04

Given Information (Part b)

A 5000kg interceptor rocket is launched at an angle of 44.7. The thrust of the rocket motor is 140,700N.

05

Explanation (Part b)

The equation y(x)=x2 is one of a straight line, where the y-intercept is zero. Therefore, the rocket's trajectory is a straight line.

06

Final Answer (Part b)

The rocket's trajectory is a straight line.

07

Given Information (Part c)

A 5000kg interceptor rocket is launched at an angle of 44.7. The thrust of the rocket motor is 140,700N.

08

Explanation (Part c)

According to the information:

Mass of the rocket m=5000kg

Thrust of rocket T=140700N

Angle made by the rocket with the horizontal,=44.7

Calculate the net force in the upward direction:

F=Tsinmg

role="math" localid="1648356762974" =140700sin44.750009.81

role="math" localid="1648356783632" =49967.63N

Calculate the net force in the horizontal direction:

Fx=140700cos44.7

Fx=100009.48N

F=100009.482+49967.632

F=111797.40N

Calculate the acceleration in the upward direction:

a=Fnetm

role="math" localid="1648357149228" =11797.405000

role="math" localid="1648357176500" =22.36m/s2

09

Applying the equation of motion

Using the law of equation of motion:

v2u2=2as

Where,

vis the initial velocity

uis the final velocity

sis the distance covered

s=v22a

role="math" localid="1648357201368" =3302222.36

role="math" localid="1648357225685" =2435.15m

Tan=FyFx

Tan=49967.6310009.48

Tan=0.4996289

=26.550

Next find the elevation:

Elevation role="math" localid="1648357435052" h=2435.15sin26.550

h=1088.459m

10

Final Answer 

The rocket reach the speed of sound at the elevation of1088.46m

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