Two pieces of clay, one white and one gray, are thrown through the air. The white clay has a momentum of 25\,\text{kg}\cdot\dfrac{\text{m}}{ \text{s}}25kg⋅ s
m

25, start text, k, g, end text, dot, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction, and the gray clay has a momentum of -30\,\text{kg}\cdot\dfrac{\text{m}} {\text{s}}−30kg⋅
s
m

minus, 30, start text, k, g, end text, dot, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction immediately before they collide.
What is the magnitude and direction of their final momentum immediately after the collision?
Your answer should have one significant figure.
\text{kg}\cdot\dfrac{\text{m}}{\tex t{s}}kg⋅
s
m