3. You are standing on top of a 12 m cliff holding a 2 kg stone with a message attached. You throw the stone with an initial velocity of 20 m/s, +50" with respect to the ground. Your brother is drifting by in a hot air balloon and catches the stone after 1.2 seconds. a. How high is the balloon? b. With what velocity does your brother catch the stone? c. Where would it have landed if your brother had missed the stone? d. What is the maximum height that the stone did or could have achieved