HW#9 - Free Fall 1. Ursuline's own Anne Keneally is becoming known around Town for her performanCe on The baskeTball courTv Her jump has everyone Talking. Anne's hang Time (The ToTal Time ThaT her feeT are noT Touching The ground) is 0.80 seconds. (a) Assuming Anne jumps sTraighT up and comes righT back down wiThouT grabbing The baskeT, whaT is her iniTial velociTy? (b) How high can she jump? (c) Anne Travels To Mars for The InTer-Solar SysTem Championships. The acceleraTion of I graviTy on Mars is 4 g downward. If she jumps wiTh The iniTial velociTy you found in parT (a), whaT will be her hang Time be on Mars? (d) How high can Anne jump on Mars? 2. Dumbo dives ouT of a burning circus building, 60.0 m above The ground. How much Time does he have To figure ouT he does noT need his magic feaTher To fly? 3. Tony STark (who is noT dead) is TesTing The limiTs of his newesT suiT - The Mark 86. He sTarTs from resT on The ground (y: 0) and moves upward according To The equaTions below: v(t) = (8)t 1 yo) = 5(8):? AfTer 15 Seconds, Tony's suiT fails! (a) How high above The ground is Tony when his suiT fails? (b) WhaT is his velociTy aT This poinT? (c) Desar'ibe Tony's moTion afTer The suiT fails. (d) WhaT is his maximum heighT above The ground? (e) How long does Jarvis have To fix The problem before Tony hiTs The ground? 4. The graph below shows how the velocity of a ball thrown up in the air is affected by the gravity of a far-away planet. If the ball starts on the ground, answer the following questions. 30 20 10 Velocity (m/s) 2 4 6 8 10 Time (s) 10 -20 30 (a) Draw a sketch of the situation, including the path of the ball. (b) What's the acceleration of gravity on this planet? (c) How high does the ball get above the ground? (d) What is the ball's total displacement? (e) What total distance does the ball travel? (f) How long does it take to the ball to hit the ground? (g) Is this planet bigger or smaller than Earth? Give evidence to support your