A hockey puck has a mass of 0.31 kg and strikes the pole of the net at 358 m/s. It bounces off in the opposite direction at 25 m/s. What is the impulse on acting on the hockey puck?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Which of the following is a direct benefit of the use of assembly lines in production a. laws against theft fraud and coercion are needed to protect free choice. b. the government needs to plan efficient outcomes. c. competition among producers by itself cannot ensure a wide range of consumer choices. d. works pressure the government to guarantee minimum wages