# Find the angle relitive to the x axis

if anyone can please help me with these at least tell me how to start them that would be great...

CJ5 4.P.013.] Only two forces act on an object (mass = 3.10 kg), as in the drawing. (F = 50.0 N.)the other force is 40N Find the magnitude and direction (relative to the x axis) of the acceleration of the object.
m/s2
° (counterclockwise from the +x axis) (the angle inbetween the two forces is 45.)

to find the angle relitive to the xaxis I used 40sin45.. then to find the magnitude, I used the pythagorean therom... c^2=50^2+40^2 yet my answers are wrong can anyone tell me where I went wrong???

5. [CJ5 4.P.021.] On earth, two parts of a space probe weigh 11000 N and 4900 N. These parts are separated by a center-to-center distance of 24 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far from any other objects.
N I used the equation: F=G(M1M2/r^2) I used the universial gravity constant.. 6.67259E-11(11000*4900/24^2) and still got the wrong answer.. is there more to the equation than what I am seeing?

6. [CJ5 4.P.023.] Planet X has an equatorial radius of 4.80 107 m and a mass of 6.47 1026 kg.
(a) Compute the acceleration of gravity at the equator of Planet X.
m/s2
(b) What it the ratio of a person's weight on Planet X to that on Earth?
(weight on Planet X / weight on earth)

THANKS ALOT.. NICOLE