Trajectory question?

Question

A pendulum is made by tying a 500 gram ball to a 47 cm -long string. The pendulum is pulled 25 degrees to one side, then released.

What is the ball's speed at the lowest point of its trajectory?

Answer 1

Mass * 9.8 * .047m= .46 J

.46 J = 1/2MV^2,  M is same, so cancels out .96 m/s