What gravity means in physics

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.

Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?

Aforce of 6600 n is exerted on a piston that has an area of 0.010 [tex]m^{2}[/tex]. what area is rewired for a second piston to exert a force of 9900 n? use [tex]\frac{f_{1} }{a_{1} } = \frac{f_{2} }{a_{2} }[/tex]a. 0.0015 [tex]m^{2}[/tex]b. 66 [tex]m^{2}[/tex]c. 150 [tex]m^{2}[/tex]d. 0.006 [tex]m^{2}[/tex]