Questions

Any object rolls when there is no friction. So, Sliding to Rolling is correct.

Every object has two typea of energies. They are ::

Potential energy

Kinetic energy

If the object is in motion, then it has Kinetic energy (KE). Potential energy (PE) is energy that is "stored" because of the position and/or arrangement of the object.

Hence, another name for energy of motion is called Kinetic energy.

In all the given options, the countries are correctly matched with their National games.

USA - Baseball

Pakistan - Field Hockey

China - Table Tennis.

An excise or excise tax or excise duty is a type of tax charged on goods produced within the country (as opposed to customs duties, charged on goods from outside the country). It is a tax on the production of a good. This tax is now known as the Central Value Added Tax (CENVAT).