Work, Energy an...

A body of mass 1 kg is thrown upwords with a velocity 20 m/s. It momentarily comes to rest after a height 18 m. How much energy is lost due to air friction. (g = 10 m/s²)

Two bodies of masses m₁ and m₂ have equal kinetic energies. If P₁ and P₂ are their respective momentum, what is ratio of P₂ : P₁ ?

Two bodies of masses m and 3m have same momentum. their respective kinetic energies E₁ and E₂ are in the ratio.....

What is the velocity of the bob of a simple pendulum at its mean position, if it is able to rise to vertical height of 18 cm (Take g = 10 m/s²)

A force → time graph for a linear motion is shown in figure where the segments are circular. what is linear momentum gained between zero and 8 second ?

A particle is dropped from a height-h. A constant horizontal velocity is given to the particle. Taking g to be constant everywhere kinetic energy E of the particle with respect to time t is correctly shown in....

Which of the following graph is correct between kinetic energy (E), potential energy (U) and height (h) from the ground of the particle.

An engine pump is used to pump a liquid of density ρ continuosly through a pipe of cross-sectional area A. If the speed of flow of the liquied in the pipe is v, then the rate at which kinetic energy is being imparted to the liquid is

A spring is compressed by 1 cm by a force of 4 N. Find the potential energy of the spring when it is compressed by 10 cm.