# m above theA sandbag is dropped from a hot ai balloon at a height of 12ground. Find its velocity as it hits the ground. Disregard air resistance.An ironworker drops a hammer 5.25 m to the ground. What is its speed as it hitsthe ground?A box is dropped 3.60 m to the ground. What is its speed as it hits the ground?A piece of broken glass with mass 15.0 kg falls from the side of a building 8.00 mabove the street. (a) What is the kinetic energy of the glass as it hits the street?(b) What is the speed of the glass as it hits the street?11. A ball is thrown downward from the top of a building at a speed of 75 ft/s. Findits velocity as it hits the ground 475 ft below. Disregard air resistance.12. Find the maximum height reached by a ball thrown upward at a velocity of95 ft/s13. A 4.000-kg mass is dropped from a hot air balloon 300.0 m above the ground.Find its kinetic energy, its potential energy, and the sum of the kinetic energyand the potential energy in 1-s intervals until the mass hits the ground. (Assumeno air resistance.)8.9.10.77

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Asked Nov 15, 2019
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#11

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Step 1

Given:

Initial velocity of the ball, u =75 ft/s

Height of the building = 475 ft

Gravitational acceleration = 9.8 m/s2

= 32.15 ft/s2

Step 2

Final velocity of the ball can be calculated b...

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