[Archive!] Pure mathematics, physics, chemistry, etc.: brain-training problems not related to trade in any way - page 251

Sceptic Philozoff 2010.03.02 00:48 #2501

36 сек ?

No. What trajectory does the rocket take?

EvGen 2010.03.02 00:51 #2502

spiral

Sceptic Philozoff 2010.03.02 00:56 #2503

Think about it. I haven't yet figured out why it is the way it is in the decision.

EvGen 2010.03.02 00:59 #2504

I don't understand how to calculate the length of the helix

Sceptic Philozoff 2010.03.02 01:01 #2505

The problem is for 10th grade and was given at a time when derivatives were not yet taught in school.

EvGen 2010.03.02 01:12 #2506

I don't understand why it's not 36? It's flying along the radius and it's the same

EvGen 2010.03.02 01:18 #2507

Ah, got it.

EvGen 2010.03.02 01:32 #2508

I have a vague doubt...

that the arc length of an aircraft's trajectory

from the moment the missile is launched until it hits.

and there is the length of the missile's trajectory.

So the spiral formula is unnecessary )

Sceptic Philozoff 2010.03.02 01:39 #2509

Correct, the arc length is the same. The spiral formula is unnecessary. But the moment they kiss will still have to be calculated.

EvGen 2010.03.02 01:55 #2510

there's still something missing.

If you also calculate the angular velocity, the 2 unknowns (

ω=α/t