## anonymous 4 years ago An object with mass of 2 kg is moving along a horizontal surface with a velocity components vx= 5m/s and vy= -2.5m/s. What is the objects speed? What is its kinetic energy?

hi$v=\sqrt{(v _{x}^{2}+v _{y}^{2})}$$k=(1/2)mv^2$ v in KE formula is total v