Question

HI CAAAN YOU PLEASE ASSIST IN THESE PHYSICS PROBLEMS

5. (6 pts) Stan jumps out of an airplane with a parachute. After 34 seconds, he opens the parachute. The graph to the right shows Stan's vertical velocity versus time, in a coordinate system where down is positive. Velocity versus Time for a 70 kg Parachuter 60 Stan opens parachute Jumps at t 0 Opens parachute att34 s 10 Stan jumps from airplane 0 10 20 30 40 50 60 time (s) The magnitude of Stan's initial acceleration is 9.81 m/s2, then changes with time due to air resistance. The magnitude of his acceleration just after 34 seconds is 9.40 m/s2 (a) Complete the chart. Include the correct signs and use 2 significant figures time (S) just after ump at 34 s 50 20 velocity (m/s) Sign of accleration 53 Sketch a graph of Stan's acceleration versus time. Label the point where Stan jumps from the airplane and the point where Stan opens his parachute. Sketch of Acceleration versus Time 10 10 20 30 50 60 40 time,t(s) 9 0 6. (6pts) The picture shows a pulley system with masses M and m that begin at rest. M is greater than m. Assume that there is no friction in the pulleys and the mass of the pulleys is not important. (a) The system is released from rest. On the diagram, mark the direction of acceleration for M and m. (b) Draw the free body diagrams for M and m. Include coordinate systems. FREE BODY DIAGRAM OF m FREE BODY DIAGRAM OF M (a) Write Newton's Laws equations for M and m, in terms of FT, m, M, g and a Newton's Law Equation for m Newton's Law Equation for M EXTRA CREDIT (4 pts): Using the equations, show that the acceleration of the system is neyér greater than g. Does this make sense physically?

Answer 1

Co) St 10-o 一/h . accelerat on JA

10 28-50ms 38-34 久 CD