If an ammeter is to be used in place of a voltmeter, then we must connect with the ammeter a

The kinetic energy needed to project a body of mass $$m$$ from the earth surface (radius $$R$$) to infinity is

Identify the pair whose dimensions are equal

A ball whose kinetic energy E, is projected at an angle of $$45^\circ $$ to the horizontal. The kinetic energy of the ball at the highest point of its height will be