Recent content by qwerty159

A railroad car of mass M moving at a speed v1 collides and couples with two coupled railroad cars, each of the same mass M and moving in the same direction at a speed v2. (a) What is the speed vf of the three coupled cars after the collision in terms of v1 and v2? (Use M, v_1 for v1, and v_2...

Can you guys please explain it to me a) and c) because i already got b) ..

Please help me quickly..it is getting late.

-k ...what kinda question is that LOL. I know that.

Guys...Please help me.

ok -k = k -k - k = 0 -2k = 0 k = 0/-2 k = 0 Explain the other ones please

Explanation..please

what is wrong ? Give me an explanation or something so i understand better.

I still don't understand a) . I got b). How sure are you about c) ?

Homework Statement a) Determine the points where the function f (x) = (x + 3) / (x^2 − 3x − 10) is discontinuous. Then define a new function g that is a a continuous extension of f . b) Determine what value of the constant k makes the Piecewise function { (x − k)/ (k^2 + 1) ...