Question
Two skydivers are holding on to each other while falling straight down at a common terminal speed of 60.70 m/s. Suddenly, they push away from each other. Immediately after separation, the first skydiver, who has a mass m1 of 94.80 kg, has a velocity v1 with the following components ("straight down" corresponds to the positive z-axis).
v1,x=4.930 m/s v1,y=4.250 m/s v1,z=60.70 m/s
What are the x- and y-components of the velocity v2 of the second skydiver, whose mass m2 is 63.20 kg, immediately after separation?
Assume that there are no horizontal forces of air resistance acting on the skydivers.
v2,x = __ m/s
v2,y = __ m/s
What is the change in kinetic energy of the system ΔK,system?
ΔK,system = __ joules
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps
Knowledge Booster
Similar questions
- m m2 30° 2 kg, are held together by a weightless cord and passes over a over a frictionless plane Two masses, mi = 1 kg and m2 = frictionless and weightless pulley. One object is constrained to move inclined at an angle of 30°. The system is initially at rest, then was allowed to move exclusively due the gravity. Find the system's acceleration. b. Find the tension of the cord the keeps the two objects moving together. а.arrow_forwardAt t = 0, a cart of mass m = 5 kg starts rolling down an incline, making an angle α = 20o with the horizontal. Initially the cart rolls down with no friction, but after traveling a distance of ∆ = 10 m it encounters a rough surface, where the coefficient of friction is k = 0.45. Find the acceleration of the cart along the incline (positive direction is downhill) after it encounters the rough surface. A.9.8 m/s2 B.9.2 m/s2 C.7.7 m/s2 D.3.6 m/s2 E.3.4 m/s2 F.-0.8 m/s2arrow_forwardA 4.4 kg block located on a horizontal floor is pulled by a cord that exerts a force F = 10 N at an angle theta = 35 degrees above the horizontal, as shown. The floor has a coefficient of kinetic friction µk = 0.1. What is the magnitude of the acceleration [m/s2] of the block? What is the horizontal speed [m/s] of the block 4.4 seconds after it starts moving?arrow_forward
- An astronaut lost in space is far from any other mass (i.e.,gravity is negligible). He swings a weight of mass m = 0.5 kg that is tiedto a string, and it undergoes counterclockwise circular motion with aradius r = 2 m. The mass does a revolution once every 3 seconds.a) Draw the velocity and acceleration vectors of mass m at points p1,p2, and p3.b) What is the velocity?c) What is the centripetal force?d) What is the magnitude of the tension force in the string?arrow_forwardA loudspeaker of mass 25.0 kg is suspended a distance of h = 1.00 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 2.50 m . Q: What is the tension T in each of the cables? Use 9.80 m/s2 for the magnitude of the free-fall acceleration.arrow_forwardA tennis ball weighing 0.560 N moves along a trajectory as a function of time r = (10 m/s)t2i - (2 m/s)t3j at t=1s, it collides with a rock with a time duration of 3 ms, during the collision the net force on the ball is constant and equal to (- 320N)i+(100N)j . a. What are the x- and y-components of the impulse of the net force applied to the ball? b. What are the x- and y-components of the final velocity of the ball?arrow_forward
- Each propeller of the twin-screw ship develops a full-speed thrust of F = 375 kN. In maneuvering the ship, one propeller is turning full speed ahead and the other full speed in reverse. What thrust P must each tug exert on the ship to counteract the effect of the ship's propellers? Assume a = 50 m, b = 125 m, c = 12 m. + D O Answer: P = i CBD +³1 KN 2 F 4Tarrow_forwardA block and sphere are connected by a cord that passes over a pulley as shown. Neglect friction and assume the cord is massless. Take m₁ Ө = 49.0°. m1 m2 0 (a) What are the magnitude of acceleration (in m/s2) of the block and sphere? m/s² (b) What is the tension (in N) in the cord? (Enter the magnitude.) N = (c) What is the speed (in m/s) of each object 1.50 s after being released from rest? m/s = 2.00 kg, m2 = 4.95 kg, and (d) What If? If the incline under m₂ is rough, what is the minimum value of the coefficient of static friction μ for which the system will not move? Msarrow_forwardA taut massless string connects two boxes as shown in the figure. The boxes are placed on an incline plane at θ = 33.00. What is the acceleration of boxes as they move down the incline, given m2 = 1.4 kg, m1 = 5.0 kg, μ2 = 0.10 and μ1 = 0.20.arrow_forward
- A block of mass ?=353 gm=353 g is dragged with a string across a rough horizontal table. The string tension is ?=2.63 N,T=2.63 N, and it pulls upward at an angle of ?=44.0∘ϕ=44.0∘ with the horizontal. At one particular instant, the block is moving at a speed of ?=5.70 m/s.v=5.70 m/s. The coefficient of kinetic friction between the block and the table is ?k=0.699. What is the power ?TPT supplied to the block by the string tension? What is the power ?fPf supplied by the force of friction?arrow_forward54. Objects of masses m, = 4.00 kg and m, = 9.00 kg are connected by a light string that passes over a fric- tionless pulley as in Figure P4.54. The object m, is held m at rest on the floor, and m, rests on a fixed incline of 0 = 40.0°. The objects are released from rest, and m, slides 1.00 m down the incline in 4.00 s. Determine (a) the acceleration of each object, (b) the tension in the string, and (c) the coefficient of kinetic friction between m, and the Figure P4.54 incline.arrow_forwardTwo skaters are on an icy pond (no friction). They have masses m1 = 65.0 kg and m2 = 80.0 kg. They are each holding one end of a rope. The heavier skater starts exerting a force of F = 125 N. The rope tautens so that it has a tension T. What is the acceleration of each skater, and what is the tension in the rope?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios