A64.8 kg astronaut is on a space walk when the tether line to the shuttle breaks. the astronaut is able to throw a 11.0 kg oxygen tank in a direction away from the shuttle with a speed of 10.3 m/s, propelling the astronaut back to the shuttle. assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the tank. answer in units of m/s.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.