Questions in Work, Energy and Power

Select	Question
	Tripling the speed of the motor car multiplies the distance needed for stopping it by
	If the kinetic energy of a body increases by 0.1%, the percent increase of its momentum will be
	If velocity of a body is twice of previous velocity, then kinetic energy will become
	Two bodies A and B having masses in the ratio of 3 : 1 possess the same kinetic energy. The ratio of their linear momenta is then
	In which case does the potential energy decrease
	A sphere of mass m, moving with velocity V, enters a hanging bag of sand and stops. If the mass of the bag is M and it is raised by height h, then the velocity of the sphere was
	Two bodies of masses m and 2m have same momentum. Their respective kinetic energies ${E_1}$ and ${E_2}$ are in the ratio
	If a lighter body (mass ${M_1}$ and velocity ${V_1}$) and a heavier body (mass ${M_2}$ and velocity ${V_2}$) have the same kinetic energy, then
	A frictionless track ABCDE ends in a circular loop of radius R. A body slides down the track from point A which is at a height h = 5 cm. Maximum value of R for the body to successfully complete the loop is
	The force constant of a weightless spring is 16 N/m. A body of mass 1.0 kg suspended from it is pulled down through 5 cm and then released. The maximum kinetic energy of the system (spring + body) will be