22. This diagram represents a(just a example image) balloon that is moving
in one direction while escaping air is moving in
the opposite direction.
Balloon
Air
What causes the balloon to move?
A. action-reaction forces
B. electrical forces
C. friction
D. gravitational potential energy

Which one of the following research methods can show cause and effect

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

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.