Recent content by Fritsc

I've tried the question and I'm really confused right now! I didn't type it out because it's a mess in my book. Thanks!

Questions; 1)A person in a hot air balloon at 500m is rising at 20m/s. In order to rise up even faster, she drops her physics textbook out of the balloon. How long will the book take to hit the ground? Since it's thrown at 500m high, and Gravity is -9.8m/s 500/9.8 = 51 seconds However I'm not...