Phys 250, Physics I - Exam 2 Review Questions And Correct Answers 2024

12.58 ± 3% {Ans: You observe two people pushing a crate ( unknown mass) across a level surface that has a coefficient of kinetic friction with the box of 0.182. If the crate has a constant acceleration of 2.35, and one of the people is pushing with force 25.8 N and the other person is pushing with force 26.2 N, what is the mass of the box? Both people are pushing in the same direction. Your answer should have 2 digits past the decimal.}speeding up. {Ans: You are in a train traveling on a horizontal track and notice that a piece of luggage starts to slide directly toward the back of the train. From this observation, you can conclude that this train is}Any horizontal force greater than zero. {Ans: A 75-N box rests on a perfectly smooth horizontal surface. The minimum force need to start the box moving is}21.50 ± 3% {Ans: Two people are pushing a crate ( 10.1 kg) across a level surface that has a coefficient of kinetic friction with the box of 0.205. If the crate has a constant acceleration of 1.07, and one of the people is pushing with force 9.6