Question

Question 3 4 pts The ballistic pendulum consists of a block of dense material suspended from a cord and allowed to swing freely. A bullet is fired into the block, lodging itself into the block in a _. The (block+bullet) having now acquired a velocity, swings upward to some maximum height. (See lab manual) neutral collision perfectly elastic collision elastic collision perfectly inelastic collision Question 4 5 pts For the ballistic pendulum experiment, all of the following are true or assumed to be true except? (See lab manual) All of the above The (block + bullet) system having acquired a velocity, swings upward to a maximum height None Maximum Kinetic energy (just after collision) equals gravitational potential energy at highest altitude Momentum before collision equals momentum after collision The collision is perfectly inelastic

Answer 1

Answers :

Question (3) Answer : perfectly inelastic collision.

Question (4) Answer : None (because, all the statements are true.)

A collision between two bodies can be elastic or inelastic. In an elastic collision the two bodies rebound with no loss of kinetic energy. In an inelastic collision one or both bodies can be deformed, or they can stick together. Either of these processes absorbs some of the systems kinetic energy. The system can also dissipate kinetic energy in producing sound or heat. Since there are no external forces acting on the system at the time of the collision, linear momentum must be conserved in both cases.