10. consider what happens when you jump up in the air. which of the following is the most accurate statement? a) you are able to spring up because the earth exerts a force upward on you that is greater than the downward force you exert on the earth. b) it is the upward force exerted by the ground that pushes you up, but this force cannot exceed your weight. c) when you push down on the earth with a force greater than your weight, the earth will push back with the same magnitude force and thus propel you into the air. d) when you jump up the earth exerts a force f1 on you and you exert a force f2 on the earth. you go up because f1 > f2. e) since the ground is stationary, it cannot exert the upward force necessary to propel you into the air. instead, it is the internal forces of your muscles acting on your body itself that propels your body into the air.

With i really need the correct answer!

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.

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?