I'm having trouble with adding two-dimensional motion. Here's an example of the type of problem I'm having trouble with: A map gives you the following directions: Travel 45 mintues at a speed of 1.2 m/sec and a heading of 45 degrees. Turn to a heading of 330 degrees and travel at the same speed for 32 minutes. What will your displacement be if you follow these directions? I was taught to use this equation: [tex]\Delta[/tex]x = initial velocity * time + 1/2 * acceleration * time^2 and Ax= initial velocity * cos() Ay= initial velocity * sin() and the same for the the second vector. I started out with trying to find the first vector or vector A as I called it. [tex]\Delta[/tex]x= 1.2 m/sec(2700 sec) + 1/2 (0)(2700 sec)^2 and got [tex]\Delta[/tex]x=3240m which I thought was a bit high, so I don't know if I'm doing something wrong or if it should really be that high.