A projectile is launched with an initial speed of 15.5 m/s at an angle of 78 degrees above the horizontal, What are the x and y components of the initial velocity?

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?