Question

My Notes A basketball rolls across a classroom floor without slipping, with its center of mass moving at a certain speed. A block of ice of the same mass is set sliding across the floor with the same speed along a parallel line.

How do their energies compare?
A. The ice has more kineticenergy.
B. They have equal kineticenergies.
C. The basketball has more kineticenergy.

Answer 1

C. the basketball has more kinetic energy

Step-by-step explanation:

since the basketball roll across the classroom, it has angular momentum which means that the basket ball has kinetic energy not only because of the translation, but also from the rotation. whereas, the kinetic energy of block ice is only due to the translation, because the cube ice does not have angular motion. that's why the kinetic energy of basket ball is higher than the cube ice.