Particularly how can a human leap from the water like a dolphin.
I'm guessing buoyancy and velocity are the main factors involved here, like a water polo ball pushed under will spring out no problem.
Or a whale given enough velocity.
A dolphin can dive deeper and quicker than humans and...
Homework Statement
If I pulled out in front of a car tht was going constant velocity of say 10m/s and I accelerated to 10m/s in 5 sec, is there a use for calculus to show the point of a collision if any or time safe distance required to avoid a collision?
Homework Equations
The...
F=ma
eg, a static bag of a 1kg weight has a force on the table of .98N.
if it were to fall, would its force hitting the ground be the sum of the standard g of 9.8m/s+ 9.8t?
or do you scrap that idea and use K.E. instead?
and also, if it reaches terminal velocity and has an acceleration of 0...
i guess if you somehow happened to know the sound intensity that you are hearing, i know there's the iphone app, you could work out the distance, and from there that would give you a starting point and given a fixed speed, would then calculate how long it will take to get to you,
but that the...
i would imagine that the surrounding water would absorb some of the impact more than air particles,
and also wouldn't the heat caused by the friction be cooled more quickly by water
cheers guys,
wasnt sure if id be laughed at, only a first year engineering student.
i get the lightning storm idea, that's a good one and I've practised that one a few times, and used trig to measure its height too,
but if the object is moving, and an estimate of speed, would you need a...
first thread, sorry if its in the wrong place.
I can't find anything about this but it seems logical none the less.
I was watching something where a noise was heard and then a plane flew by.
Assuming it was a train, to make it easier,
and you hear a train whistle and your on the track you...