Chapter 2: Homework 1 Question 8 of 10 km/s. As you pass the location km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of N for 19.0 s. The ejected gases have a mass that is small compared to the mass of the What will be its position at t = 0.12 s? spacecraft. You then continue coasting with the rocket engines turned off. Where are you an hour later? (Think about what approximations or simplifying assumptions you made in your analysis. Also think about the choice 7 = ( i m of system: what are the surroundings that exert external forces on your system?) 71 = > m Save for Later Attempts: 0 of 4 used Submit Answer eTextbook and Media Save for Later Part 2 At t =0.12 s, the net force on the ball is now (-0.0149, -0.0213, 0) NWhat will be its position at t = 0.14 7 = ( i eTextbook and Media 10:40 AM Mon Oct 2 L 100% 10:40 AM Mon Oct 2 ... ( 100% IM Chapter 2: Hon X Ask a Question X ckumarad's pr X Free Asti w Question 10 of X IM Chapter 2: Hon X Ask a Question X ckumarad's pre X Free Asti w Question 10 of X education.wiley.com - education.wiley.com Chapter 2: Homework 1 Chapter 2: Homework 1 Question 10 of 10 - /15 : Question 10 of 10 4 - / 15 (c) (1 = 0.10 s) = m Current Attempt in Progress Save for Later Use the approximation that U avg ~ py /m for each time step. You throw a metal block of mass 0.21 kg into the air, and it leaves your hand at time ? = 0 at location Attempts: 0 of 4 used Submit Answer m with velocity m/s. At this low velocity air resistance is negligible. Using the iterative method shown in Section 2.4 with a time step of 0.05 s, calculate step by step the position and velocity of the block at 1 = 0.05 s,1 = 0.10 s, and t = 0.15 s. (Express your answers in vector form.) Part 4 Part 1 (d) 7 (1 = 0.105) = m/s (a) 7 (1 = 0.05s) = m Attempts: 0 of 4 used Submit Answer Save for Later Attempts: 0 of 4 used Submit Answer Part 5 (e) 7 (1 = 0.15s) = m Save for Later (b) 7 1 = 0.05 s) = m/s Save for Later Part 6 Attempts: 0 of 4 used Submit Answer (f) U (1 = 0.15s) = m/s Part 3