K:potassium
Cu:copper
Cl: chlorine
It is actually are tools that make work easier C because i just had it on study island
When the wheels of the skateboard get stuck in the crack of the sidewalk, the riders inertia will continue forward and cause him to fall off/down.
The direction of the skaters after the collision is 61 degrees.
<h3>
Momentum of the skaters</h3>
The momentum of the skaters is calculated as follows;
P(N) = 58.9 x 7.8 = 459.42 kgm/s
P(E) = 72.6 x 3.5 = 254.1 kgm/s
<h3>Direction of the skaters after collision</h3>
The direction of the skaters after the collision is calculated as follows;

Thus, the direction of the skaters after the collision is 61 degrees.
Learn more about direction of collision here: brainly.com/question/25891473