Why does one end of a nail is wide while the other end is sharp?

8.04924 m/s²

Explanation:

r = Distance the child is from the center = 4.65 m

= Angular acceleration = 0.745 rad/s²

= Angular velocity = 1.25 rad/s

Velocity is given by

Radial acceleration is given by

Tangential acceleration is given by

The resultant acceleration is given by

The magnitude of the acceleration of the child is 8.04924 m/s²