Could someone tell me whether this statement is true or false. This question appeared in a practise test and I think that the answer to it is incorrect. Statement 1: If linear momentum of a system of particles is zero, then the kinetic energy of the system will also be zero. Statement 2: Linear...

A 13-g bullet traveling 230m/s penetrates a 2.0Kg block of wood and emerges going 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?

If a bullet with mass m strikes a block with mass 99m. What are the momentum and energy equations if: a. the bullet bounces back b. the bullet goes trough the rock c. both move as one unit

A baseball catcher applies a rightward force of 6000n to a leftward moving baseball to bring it from a high speed to a rest position over a distance of 0.10metres. If the ball begins with 605 j of energy , then the final or total mechanical energy in joules is?

Please could you help me with these problems..Thanks in advance for your help. 14.) A person moves a large box across a level floor by applying a horizontal force of 300 N. If the person pushes the box a distance of 6 meters in 10 seconds, how much work does the person do on the box?a. 180...