# projectile motion.

Discussion in 'Homework Help' started by GMChandio, Mar 5, 2015.

1. ### GMChandio Thread Starter New Member

Feb 26, 2015
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the horizontal component of a projectile moving with initial velocity of 500 m/s at an angle 60° to x-axis is equal to:

2. ### MrChips Moderator

Oct 2, 2009
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Draw your x and y vectors along with the velocity vector.

3. ### nDever Active Member

Jan 13, 2011
154
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Don't confuse the terminology. Horizontal and vertical components are properties of vectors. Projectiles are not vectors.

Feb 26, 2015
28
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Got it.

5. ### MrChips Moderator

Oct 2, 2009
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3,451
What is the value of sin(0)?
What is the value of cos(0)?

6. ### alfacliff Well-Known Member

Dec 13, 2013
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then find out what balisstic coeficient is, unless your talking about projectiles in space.

7. ### djsfantasi AAC Fanatic!

Apr 11, 2010
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Or projectiles in a homework problem that conveniently ignores select real world conditions.

8. ### MrChips Moderator

Oct 2, 2009
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Presumably the question asks for components at initial firing.

9. ### alfacliff Well-Known Member

Dec 13, 2013
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it has to travel through the atmosphere, a bullet starts to slow down as soon as it leaves the muzzle, affecting the path of its flight.

10. ### WBahn Moderator

Mar 31, 2012
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Learn to crawl before walking -- almost all projectile motion studies begin in the absence of friction of any kind. That comes later, and even then it is simplified and ignores other factors that real-world long-range projectile motion problems have to take into account.

11. ### MrChips Moderator

Oct 2, 2009
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Why make life more complicated than what is necessary?

12. ### atferrari AAC Fanatic!

Jan 6, 2004
2,663
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Shooting from the hip just two meters away from the target? Couldn't resist.