You throw a rock off of a cliff in the horizontal direction with a velocity, v. one second later you throw an identical rock with the same velocity, v, in the horizontal direction. what is true about the distance between the two rocks beginning after you throw the second one? (a) it depends on the height of the cliff.(b) deductions 0% whether the distance between the rocks will increase or decrease depends on the potential 100% velocity v with which they are thrown.(c) the distance between the rocks will stay the same as time passes.(d) it cannot be determined.(e) the distance between the rocks will increase as time passes.(f) the distance between the rocks will decrease as time passes,

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.

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

The amount of potential energy possessed by an elevated object is equal to what?