Calculate the kinetic energy of a hollow metal sphere of mass 2 kg, which rolls over a horizontal surface with a linear velocity of 20 cm/s ?

Explanation

To calculate the kinetic energy of a hollow metal sphere that rolls over a horizontal surface, we need to consider both its translational and rotational kinetic energy. Here’s a step-by-step solution:

### Step 1: Identify the formulas for kinetic energy
The total kinetic energy (KE) of a rolling object is the sum of its translational kinetic energy (KEt) and rotational kinetic energy (KEr):
\[ KE = KEt + KEr \]
Where:
...