A hockey puck sliding on a frictionless surface strikes a box at rest. After the collision, the two objects stick together and move at some final speed.
Which of the statements describes the change in momentum and energy of the puck during the collision?

a) The puck loses some, but not all, of its original momentum and mechanical energy.
b) One cannot determine if the momentum or energy of the puck is conserved without knowing the final velocities and masses of the two objects.
c) The puck loses some momentum in the collision but conserves its mechanical energy.
d) The puck conserves its original momentum but loses all of its mechanical energy.
e) The puck conserves its original momentum and mechanical energy.
f) The puck conserves its original momentum but loses some, but not all, of its mechanical energy.

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called