physics

posted by elana

a soccer ball is kicked with an initial velocity of 5.0 m/s^2 in a direction of 30 degrees above the horizontal
a. what are the initial components of the velocity?
vix=
viy=
b. what are the components of the veloicty just before the ball hits the ground?
vx=
vy=

1. Marilyn Mendoza

The inicial componente of velocity can be found by using SOH,CAH,TOA or it can be also be found by c^2= a^2 + b^2.
This is the way I did it.
To find y I used the sin of 50 in order to find one of the sides.
It would look something like this
sin(50)= y/25 (you may place a 1 on the bottom part of sin(50) so you could cross multiply)

After you cross multiply you should have -6.559=y ( that's your answer for the first part)

Now let's solve for the X component.
Since I find y and the problem already gives the hypotenuse, which is 25 m/s, you may now use the c^2= a^2 + b^2 formula. Or you may still used the SOH,CAH,TOA.
In this case I will use the first formula. It would be set up something like this:
(-6.559...)^2 + b^2 = (25)^2

43.025... + b^2= 625
( subtract the 43.025... From both sides)
b^2= 581.974
( now square up both sides so b can be by itself)
b= 24.12

2. Marilyn Mendoza

Sorry guys, both of my answers are wrong since I totally forgot to change my calculator into Degrees, you follow the same steps but now in Degrees.
Y= 19.15 & X= 16.07
(Sorry for my mistake)

Similar Questions

1. Physics

A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity?
2. Physics

A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity?

a soccer ball is kicked with an initial velocity of 5.0 m/s in a direction of 30 degrees above the horizontal a. what are the initial components of the velocity?
4. Physics

A soccer ball is kicked with an initial horizonal velocity of 18 m/s and an initial vertical velocity of 18 m/s. 1) What is the initial speed of the ball?
5. physics

If someone kicks a soccer ball across a flat parking lot with an initial velocity of 19.0m/s @ 19 degrees, how long will the soccer ball be in flight and how high above its launch point will the ball go?
6. Physics - 2-D kinematics

A soccer ball is kicked with an initial horizontal velocity of 20 m/s and an initial vertical velocity of 16 m/s. I've calculated: Initial Speed: 25.61 m/s Angle: 38.66 degrees Maximum Height it reaches: 13.06 m Distance kicked: 65.29m …
7. Physics

A soccer ball is kicked with an initial horizontal velocity of 19.0 m/s and an initial vertical velocity of 14.0 m/s 6) How high above the ground is the ball 1.1 seconds after it is kicked?
8. physics

A soccer ball is kicked with an initial horizontal velocity of 16 m/s and an initial vertical velocity of 17 m/s. 3) What is the maximum height the ball goes above the ground?
9. physics

A soccer ball is kicked with an initial horizontal velocity of 16 m/s and an initial vertical velocity of 17 m/s. 1) What is the initial speed of the ball?
10. science

A ball is kicked with an initial velocity of 20.0m/s at an angle of 30.0 degrees above the ground. What are the horizontal and the vertical components of its velocity after 1 second?

More Similar Questions