Two toy cars can roll without friction on a horizontal surface. car a is a 5 kg. car b is 0.5 kg. both cars start from rest. equal sized forces are used to push each cart forward for a time of 1 second. after 1 second the force is removed. what is the difference in magnitude of the momenta of the two cars, right after the force is removed? choices: a. the momentum of car a(5kg) is equal to that of car b(0.5)b. the momentum of car a (5kg) is less than that car b (0.5)c. the momentum of car a (5kg) is more than that car b (0.5)d. 5.5 kg m/s

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.