PHYS 1110: Unit Test 2-Chapter 6 and Chapter 7 Questions and Revised Answers Edition.

How much potential energy does a 26.71 kg box have at a height of 7.32 m? Round your answer to 2 decimal places. - Answer 1,9555.17 What is the momentum of a 26.20 kg car with a velocity of 9.46 m/s? Round your answer to 2 decimal places. - Answer 247.85 How much power is used if an 6,604 kg box is lifted to a height of 12.54m in 3.38 seconds? Round your answer to 2 decimal places. - Answer 245.01 How much work is done lifting a 14.40 kg box to a height of 9.89m? Round your answers to 2 decimal places. - Answer 1,424.16 How much work is done stopping a t 15.80 kg car that is traveling at 29.33 m/s? Round your answer to 2 decimal places. - Answer -6,795.97 How much impulse is given to a 28.60 kg train car that is accelerated from rest to 22.63 m/s in 4.46seconds? Round your answer to 2 decimal places. - Answer 647.22 The total energy of a system is always equal to the ____. - Answer Potential energy plus kinetic energy A person with a high power output does ______ total work than a person with low power output. - Answer Can't tell from this information Two objects that collide will stick together during a(n) _________collision. - Answer Inelastic The unit of mass is the _________. - Answer kilogram (kg) A rock is thrown straight up. Which statement best describes the energy transformation as the rock moves upward? - Answer Potential energy increases as kinetic energy decreases A man can either walk or run up a flight of stairs. He will generate more power when he ____. - Answer Runs up