All angles are measured as anti-clockwise rotations from the +x-axis. An object has an initial velocity of 2.91 m/s at 26.6 degrees. 6.6 seconds later it is moving at 91.15 m/s at an angle of 131.5 degrees. What acceleration caused this change in velocity? (Give your answer in terms of the +x-axis, in degrees)
Acceleration =
,
Angle =
from the positive x axis.

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j. b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

How many electrons does each element require in its valence shell to become stable?

Answer on edg: what happens to the light coming from the sun? - scattering what happens to light on the surface of water? - specular reflection what happens to light on the surfaces of rocks? - diffuse reflection