Determine Initial Velocity of Rocket: Range 300 km, Height 100 km

  • Thread starter Thread starter swirly90
  • Start date Start date
  • Tags Tags
    Projectiles
AI Thread Summary
To determine the initial velocity of a rocket with a range of 300 km and a maximum height of 100 km, one must calculate the vertical and horizontal components of the velocity. The launch angle is not provided, so it needs to be derived from the given data. The relevant equations include those for vertical motion (using d = Vi(t) + 1/2At^2) and horizontal motion, which can be adjusted to find time of flight and maximum range. Understanding these equations is crucial for solving the problem accurately. Proper application of these principles will yield the initial velocity needed for the rocket's trajectory.
swirly90
Messages
8
Reaction score
0
The question is A rocket has the range of 300 km and the max. height of 100km. Determine the initial velocity. How do I figure this out?

I know you have to find out vertical and horizontal componets but I don't think I know how to do that.
 
Physics news on Phys.org
does it give the angle of the launch?
 
No it doesn't it, its part of your suppose to figure out.
 
when you are figuring out time do you use d=Vi(t)+1/2At^2 but alter it to find time?
 
Write down the relevant equations for vertical component and horizontal component of velocity, time of flight, maximum height and maximum range.
 
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
I was thinking using 2 purple mattress samples, and taping them together, I do want other ideas though, the main guidelines are; Must have a volume LESS than 1600 cubic centimeters, and CAN'T exceed 25 cm in ANY direction. Must be LESS than 1 kg. NO parachutes. NO glue or Tape can touch the egg. MUST be able to take egg out in less than 1 minute. Grade A large eggs will be used.
Back
Top