5 (a) A race car is moving on a circular track with constant speed. Is its momentum changing? Why or why not? Explain ca

[answerhappygod]

5 (a) A race car is moving on a circular track with constant speed. Is its momentum changing? Why or why not? Explain carefully but briefly.
(b) Is there a net force acting on the car? How do you know? Explain carefully but briefly.
(6) (a) Find the magnitude of the vector <1,-1,2>.
(b) Find the unit vector that points in the direction of the vector <1,-1,2>. (c) Find the direction cosines made by <1,-1,2> and compute the associated angles. (d) Find the components of <1,-1,2>. (e) Draw a right handed, 3D coordinate system in your notebook and then draw <1,-1,2>.
(b) Find the unit vector that points in the direction of the vector <1,-1,2>.
(c) Find the direction cosines made by <1,-1,2> and compute the associated angles.
(d) Find the components of <1,-1,2>.
(e) Draw a right handed, 3D coordinate system in your notebook and then draw <1,-1,2>.