Writing Prompt: Write about the force of gravity that you feel when you are on Earth. Then compare that
force with the force of gravity you would feel on a larger planet and then also on a
smaller planet. Explain and give examples of how the motion of objects might be
affected on each of the three planets.
M

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

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.

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?