Ok I have a question...you don't need to answer but just help me understand it please; it's confusing and I'm wasting too much:
A destroyer is moving due north at 8.5 metres/second when a depth charge is catapulted off the side of the ship in a direction (North 35 degrees East) relative to the deck of the ship. What is the velocity of the depth charge relative to the water if the speed relative to the deck is 28 metres/second?
Ok, what the heck do they mean by destroyer? Also, they want the velocity of the depth charge...what's a depth charge?
If you guys could please just help explain this question, you'd be a really big help. Thanks
2006-10-04 07:11:32 · 4 answers · asked by A 2 in Science & Mathematics ➔ Physics
well in all probability u found this question in resnick halliday. they make the simplest question complicated :P anyway a destroyer I THINK is a submarine which has torpedoes. and a depth charge is a torpedo. so now the submarine is moving north at 8.5 m/s. it fires a torpedo(a missile) and a person on the submarine sees it move north 35 east. at a speed of 28m/s. what is the speed seen by a person NOT on the submarine but inside the sea. this is the question.
for a hint on how to do the problem, use the fact that v(missile relative to submarine)=v(missile)-v(submarine). where v denotes velocity and everything is a vector in the abv eqn. v(submarine) is given. we can find v(missile rel 2 sub.) by the 2 given data. and use the eqn to find v(missile) which is asked in the question
:)
2006-10-04 07:18:04 · answer #1 · answered by netsavvy_sashi 2 · 0⤊ 1⤋
A destroyer is a vintage naval ship designed mainly to seek out and destroy submarines.
The depth charge is a can of explosives designed to go off at predetermined depths in the ocean in hopes of crushing the hulls of submarines and, thereby, destroying them. A depth charge is typically rolled off the stern of a destroyer or catapulted or shot off the port (left) or starboard (right) side of its deck.
2006-10-04 14:21:38 · answer #2 · answered by oldprof 7 · 0⤊ 0⤋
A destroyer is a ship. A depth charge is a missle, bullet, projectile, something you launch off of a ship.
You will need to add a couple of vectors together to find the answer.
2006-10-04 14:15:18 · answer #3 · answered by Sean H 2 · 0⤊ 0⤋
i think that your overthinking the question.. doesn't really matter what a destroyer is, or what a depth charge is.. just do your diagram according to what the numbers are and do the math... pretend that it's a newspaper thrown out of a car if u have to, it really makes no difference
2006-10-04 14:24:47 · answer #4 · answered by rivernazgul399 2 · 1⤊ 0⤋