Work, Energy an...

Two bodies of masses 0.1 kg and 0.4 kg move towards each other with the velocities 1 m/s and 0.1 m/s respectively, after collision they stick together. In 10 sec the combined mass travels

A bag (mass M) hangs by a long thread and a bullet (mass m) comes horizontally with velocity v and gets caught in the bag. Then, for the combined (bag + bullet) system

A 50 g bullet moving with velocity 10 m/s strikes a block of mass 950 g at rest and gets embedded in it. The loss in kinetic energy will be

If a skater of weight 3 kg has initial speed 32 m/s and second one of weight 4 kg has 5 m/s. After collision, they have speed (couple) 5 m/s. Then, the loss in K.E. is

A ball is dropped from height 10 m. Ball is embedded in sand 1 m and stops, then

A bullet of mass m moving with velocity v strikes a block of mass M at rest and gets embedded into it. The kinetic energy of the composite block will be

A body of mass m₁ is moving with a velocity V. It collides with another stationary body of mass m₂. They get embedded At the point of collision, the velocity of the system

A ball hits the floor and rebounds after inelastic collision. In this case

If W₁, W₂ and W₃ represent the work done in moving a particle from A to B along three different paths 1, 2 and 3 respectively (as shown) in the gravitational field of a point mass in, find the correct relation between W₁, W₂ and W₃.