- 1A stone is dropped from the edge of a roof, and hits the ground with a velocity of -195 feet per second
A stone is dropped from the edge of a roof, and hits the ground with a velocity of -195 feet per second. How high is the roof? .

- 2A stone is dropped from the edge of a roof, and hits the ground with a velocity of -145 feet per second
A stone is dropped from the edge of a roof, and hits the ground with a velocity of -145 feet per second. How high (in feet) is the roof

- 3A stone is thrown straight down from the edge of a roof, 750 feet above the ground, at a speed of 7 feet per second
A stone is thrown straight down from the edge of a roof, 750 feet above the ground, at a speed of 7 feet per second. A. Remembering that the acceleration due to gravity is -32 feet per second squared, how high is the stone 5 seconds later? B. At what time does the stone hit the ground? C. What is the velocity of the stone when it hits the ground?

- 4a stone dropped from the roof at a velocity of 6m/s2 and reaches the ground with the velocity of 18m/s
a stone dropped from the roof at a velocity of 6m/s2 and reaches the ground with the velocity of 18m/s.how high is the roof from the ground

- 5A brick dropped from a roof hits the ground 3.29 seconds later
A brick dropped from a roof hits the ground 3.29 seconds later. How high (in m) was the roof?

- 6A brick dropped from a roof hits the ground 4.14 seconds later
A brick dropped from a roof hits the ground 4.14 seconds later. How high (in m) was the roof?

- 7A boy drops a stone-A, down from a cliff 480 meters high, next he throws a stone-B, 1 second later - at what initial velocity was the stone-B be thrown so as to meet the stone-A on ground at the same time
A boy drops a stone-A, down from a cliff 480 meters high, next he throws a stone-B, 1 second later - at what initial velocity was the stone-B be thrown so as to meet the stone-A on ground at the same time? g=10 m/s2.

- 8A ball is thrown straight up from the ground
with an initial velocity of 30.4 m/s; at the
same instant, a ball is dropped from the roof
of a building 21.1 m high
A ball is thrown straight up from the ground with an initial velocity of 30.4 m/s; at the same instant, a ball is dropped from the roof of a building 21.1 m high. After how long will the balls be at the same height? The acceleration of gravity is 10 m/s2. Answer in units of s

- 9A stone is thrown straight down from the edge of a roof, 725 ft
A stone is thrown straight down from the edge of a roof, 725 ft above the ground, at a speed of 7 ft/sec.A. Given that the acceleration due to gravity is -32 ft/sec2, how high is the stone 4 seconds later? ft.B. At what time does the stone hit the ground? sec.C. What is the velocity of the stone when it hits the ground?

- 10A stone is dropped from the roof of a high building
A stone is dropped from the roof of a high building. A second stone is dropped 1.74 seconds later. Pt. A) How far apart are the stones when one has reached a speed of 13.2 m/s^2?

- 11A stone is dropped from the roof of a high building
A stone is dropped from the roof of a high building. A second stone is dropped 1.51 later. How far apart are the stones when the second one has reached a speed of 12.6 ?

- 12A 0.22-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The...
(a) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone-Earth system before the stone isreleased.(b) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone-Earth when it reaches the bottomof the well?(c) What is the change in gravitational potential energy of the system from release to reaching the bottom of the well?