Found half an answer, I with the direction please.

[nesan]

Homework Statement

A projectile is launched with a horizontal velocity of 10 m/s and a vertical velocity of 20 m/s. What is the magnitude and direction of the projectile’s initial velocity?

The Attempt at a Solution

I've tried using the trigonometric method but I end up with only 1 side and 1 angle which isn't good. I could logically think that since one side is 20 and one side is 10, the angle would be

90 / 3 = 30

30 * 2 = 60

But the answer sheet says 63 degrees. :"(
I found the magnitude but the problem is I can't find the direction. More specifically, at what degree is it traveling at.

The magnitude is 22.

So it should be

22 m/s [Up x Horizontal]

x = an unknown angle

I'm having trouble finding the value of x.

Than you. :3

NVM GOT IT. LOL :D

 

[PeterO]

Homework Statement

A projectile is launched with a horizontal velocity of 10 m/s and a vertical velocity of 20 m/s. What is the magnitude and direction of the projectile’s initial velocity?

The Attempt at a Solution

I've tried using the trigonometric method but I end up with only 1 side and 1 angle which isn't good. I could logically think that since one side is 20 and one side is 10, the angle would be

90 / 3 = 30

30 * 2 = 60

But the answer sheet says 63 degrees. :"(



I found the magnitude but the problem is I can't find the direction. More specifically, at what degree is it traveling at.

The magnitude is 22.

So it should be

22 m/s [Up x Horizontal]

x = an unknown angle

I'm having trouble finding the value of x.

Than you. :3

NVM GOT IT. LOL :D

Have you drawn a picture?
If you did you would see a right-angled triangle, and just use the Tangent function.