Answer: 12.0 m/s^2
Explanation:
Let
be the angular acceleration of the end of the rod
Taking torque about the link, we have:

Torque is also given in terms of moment of inertia of the rod and its angular acceleration i.e.

From equations (i) and (ii) we have:

The acceleration of the end of the rod farthest from the link is given by:

3.1 the only reason i know this is cause i got it wrong
Answer is Cation
whilst an anion is the one that is negatively charged after gaining electrons
Answer:

Explanation:
Let's use the conservation of momentum to solve it.
(1)
- The total initial momentum will be:

- The total final momentum will be:
, but as they stick together after the collision, v1f = v2f = vf.
So we can rewrite (1), using the above information:




Finally, the magnitude of the velocity of the wreckage of the two cars immediately after the collision is:

I hope it helps you!