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January 27, 2015

Search: A ball is dropped from rest at the top of a 7.80-m-tall building, falls straight downward, collides inelastically with the ground, and bounces back

Number of results: 36,157

physics
A body is dropped from the rooftop of the building.The body reaches the ground at t= 4.05 from the point of release.how tall is the building?what is the speed of the body just before it reaches the ground?
November 23, 2011 by thea

Physics
A ball initially at rest is dropped from a window 18.6 m off the ground. How long does it take for the ball to reach the ground? Round your answer to 2 decimal places.
November 21, 2010 by Patel

Physics
You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 4.50 m/s, directed downward, and it hits the ground 2.04 s after it is released. Find the height of the balcony.
February 24, 2010 by Delilah

physics
You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.25 m/s, directed downward, and it hits the ground 1.94 s after it is released. Find the height of the balcony.
September 13, 2011 by Nour

Physics
You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.20 m/s, directed downward, and it hits the ground 2.10 s after it is released. Find the height of the balcony.
January 31, 2012 by Haze

Physics
A ball, dropped from rest, cover 2/7 of the distant to the ground in the last 2 seconds of its fall. From what height was the ball dropped? What was the total time of the fall?
October 11, 2009 by Robert C

Physics
A ball is thrown straight up from the ground with speed v_0. At the same instant, a second ball is dropped from rest from a height H, directly above the point where the first ball was thrown upward. There is no air resistance. Find the value of H in terms of v_0 and g so that ...
May 28, 2010 by Anonymous

Physics
A 0.030-kg bullet is fired straight up at a falling wooden block that has a mass of 5.0 kg. The bullet has a speed of 700 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
October 24, 2010 by Xavier

Physics
A 0.012-kg bullet is fired straight up at a falling wooden block that has a mass of 5.0 kg. The bullet has a speed of 670 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
January 11, 2011 by Tom Atlus

Physics
A 0.014 kg bullet is fired straight up at a falling wooden block that has a mass of 4.0 kg. The bullet has a speed of 760 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
October 22, 2012 by Elizabeth

Physics
A 0.0122-kg bullet is fired straight up at a falling wooden block that has a mass of 2.17 kg. The bullet has a speed of 813 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the ...
October 13, 2013 by Briana

Physics!
A 0.0124-kg bullet is fired straight up at a falling wooden block that has a mass of 3.96 kg. The bullet has a speed of 756 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the ...
October 19, 2014 by Sanz

calculus
A fence 8 feet tall stands on level ground and runs parallel to a tall building. If the fence is 1 foot from the building, find the shortest ladder that will extend from the ground over the fence to the wall of the building.
October 11, 2012 by Erica

Physics
A. You can use any coordinate system you like in order to solve a projectile motion problem. To demonstrate the truth of this statement, consider a ball thrown off the top of a building with a velocity at an angle θ with respect to the horizontal. Let the building be 50.0...
September 9, 2011 by Awonah

Calculus
A fence 5 feet tall runs parallel to a tall building at a distance of 2 feet from the building. We want to find the the length of the shortest ladder that will reach from the ground over the fence to the wall of the building. Here are some hints for finding a solution: Use the...
July 17, 2013 by J

physics
A man stands at the top of a 27-m high building and throws a penny straight downward. If the penny has an initial velocity of -3.9 m/s, what is the velocity of the penny in m/s when it hits the ground?
September 9, 2014 by Carissa

algebra
A ball falls from the top of a roof 320 feet above the ground. The formula h = -16t2 + 16t + 320 described the height of the ball above the ground, h, in feet, t seconds after the fall begins. How long will it take the ball to strike the ground?
May 16, 2010 by Anonymous

physics
A ball is dropped from rest off a 27 m building.What is the maximum speed that the ball will reach?
September 24, 2012 by Brayden

physics
1.In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.56 x 10*-17 N during the first 1.87 cm of tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen. Find the speed of the ...
September 24, 2008 by Sandhya

geometry
at a distance of 20m from a building, a person who is 3 m tall looks up at an angle of 25 degrees to see the top of the building. how tall is the building to the nearest meter?
May 21, 2013 by Alia

Physics
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 18.5o below the horizontal. It strikes the ground 3.30 s later. How far horizontally from the base of the building does the ball strike the ground? What ...
February 7, 2012 by Chloe

Physics
You are standing at the foot of the Bank of America building in San Francisco, which is 52 floors (237 m) high. You launch a ball straight up in the air from the edge of the foot of the building. The initial vertical speed is 70 m/s. a. How high up does the ball go? b. How ...
August 26, 2012 by Sara

Physics
A baseball is released at rest from the top of the washington Monument. It hits the ground after falling for 6.0 s. What was the height from which the ball was dropped? (g=9.8 m/s2 and assume air resistance is negligible)
December 3, 2010 by Jesse

math
A tree is struck by lightning. The top part breaks and falls to the ground. The part of the tree still standing is 30 feet tall and the top part that hit the ground is 40 feet from the base of the tree. How tall was the tree originally?
January 10, 2013 by Jess

Physics
A 3 kg ball is dropped from the top of a cliff. At the same time, a 9 kg ball is fired straight down from the top of the cliff. Ignoring air resistance, what can we say about their accelerations after being released?
November 4, 2010 by Zaphod

physics
A ball is dropped from a tall building What is its acceleration What does the acceleration tell us about the velocity of the ball
May 3, 2012 by lisa

Calculus
A fence 5 feet tall runs parallel to a tall building at a distance of 7 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building? [Hint: Determine the length of a ladder that touches the ...
June 22, 2009 by Z32

Physics
A billiard ball with mass 0.210 kg has a speed of 5.2 m/s and collides completely inelastically with another ball of the same size and mass. I understood the first part of the problem I just need help solving the second part. Another billiard ball traveling at 6.25 m/s ...
November 14, 2013 by Leslie

science math practice
a 60.0-kg person walks from the ground to the roof of a 74.8-m-tall building. how much gravitational potential energy does she have at the top of the building?
March 8, 2012 by celeste

physics
A 3.60 kg ball is dropped from the roof of a building 184.8 m high. While the ball is falling to earth, a horizontal wind exerts a constant force of 12.1 N on the ball. How long does it take to hit the ground? (acceleration of gravity = 9.81 m/s^2)
November 6, 2009 by Ash

physics
A 4.05 kg ball is dropped from the roof of a building 171.4 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 12.5 N on the ball. How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s^2.
November 6, 2010 by Harmonie

physics
A 3.61 kg ball is dropped from the roof of a building 152.5 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 11.6 N on the ball. How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s^2
December 17, 2010 by john

Math - Trig
From the foot of a building I have to look upwards at an angle of 22degrees to sight the top of a tree. From the top of a building, 150 meters above ground level, I have to look down at an angle of depression of 50degrees to look at the top of the tree. a. How tall is the tree...
December 14, 2013 by McKenna Louise

Physics
Ball A leaves the edge of a level table with speed Va and falls to the floor. At the instant ball A leaves the table edge, another identical ball, B, is released from rest at the height of the table top and also falls to the floor. It is observed that the balls reach the floor...
October 5, 2010 by Balthazar

Trigonometry
From the foot of a building I have to look upwards at an angle of 22degrees to sight the top of a tree. From the top of a building, 150 meters above ground level, I have to look down at an angle of depression of 50degrees to look at the top of the tree. a. How tall is the tree...
December 15, 2013 by Marie Ashley

Physics
On a planet that has no atmosphere, a rocket 14.2 m tall is resting on its launch pad. Freefall acceleration on the planet is 4.45 m/s2. A ball is dropped from the top of the rocket with zero initial velocity. (a) How long does it take to reach the launch pad? (b) What is the ...
October 20, 2010 by Maria

Math - Trig
From the foot of a building I have to look upwards at an angle of 22 to sight the top of a tree. From the top of a building, 150 meters above ground level, I have to look down at an angle of depression of 50 to look at the top of the tree. a. How tall is the tree? b. How far...
December 12, 2013 by Shelley Nicole

Calculus
A chain 64 meters long whose mass is 20 kilograms is hanging over the edge of a tall building and does not touch the ground. How much work is required to lift the top 3 meters of the chain to the top of the building?
September 29, 2012 by Ryan

Physics
A .5kg ball is dropped from a 30m high building is on the ground for 2ms then bounces up 20m. What avg force was exerted on the ball?
August 23, 2012 by Jordan

Science
a .5kg ball is dropped from a 30m high building is on the ground for 2ms then bounces up 20m. What avg force was exerted on the ball?
August 23, 2012 by Jordan

math
From the foot of a building I have to look upwards at an angle of 22 to sight the top of a tree. From the top of a building, 150 meters above ground level, I have to look down at an angle of depression of 50 to look at the top of the tree. a. How tall is the tree? b. How far...
February 11, 2014 by mackenzie

Algebra I
A 15 foot flagpole is mounted on top of a school building. If the top of the flagpole forms a 31 angle with the ground 50 ft from the base of the building, about how tall is the school building? 28 feet <-My answer 15 feet 30 feet <-second choice 11 feet
September 10, 2012 by Panda

Physics
Ironman steps from the top of a tall building. He falls freely from rest to the ground a distance of h. He falls a distance of h/ 3 in the last interval of time of 1.1 s of his fall. Hint: First, compute the velocity when Ironman reaches the height equal to the distance fallen...
October 22, 2010 by Trevor

Physics
You can use any coordinate system you like in order to solve a projectile motion problem. To demonstrate the truth of this statement, consider a ball thrown off the top of a building with a velocity v at an angle θ with respect to the horizontal. Let the building be 49.0 ...
February 5, 2014 by Malorie

Physics
A 0.0124-kg bullet is fired straight up at a falling wooden block that has a mass of 3.96 kg. The bullet has a speed of 756 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision...
October 20, 2014 by Sanz

science 10
A tennis ball is held stationary and then dropped from the roof of a tall building. What will be its velocity after 3.0 s?
August 8, 2011 by eric

physics
From the top of a tall building, a gun is fired. The bullet leaves the gun at a speed of 340 m/s, parallel to the ground. As the drawing shows, the bullet puts a hole in a window of another building and hits the wall that faces the window. h is 0.54 m and d is 8.0 m. Assume ...
October 24, 2010 by Gabbi

Physics
A golf ball is released from rest from the top of a very tall building. Choose a coordinate system whose origin is at the starting point of the ball, and whose y axis points vertically upward. The acceleration of gravity is 9.8 m/s^2. a.Neglecting air resistance, calculate the...
February 9, 2014 by Fabricus

physics
A ball of moist clay falls to the ground from a height of 19.8 m. It is in contact with the ground for 19.0 ms before coming to rest. What is the average acceleration of the clay during the time it is in contact with the ground? (Treat the ball as a particle.) PLEASE HELP! :)
August 30, 2011 by Anonymous

Please physics help
A 0.0124-kg bullet is fired straight up at a falling wooden block that has a mass of 3.96 kg. The bullet has a speed of 756 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision...
October 20, 2014 by Sanz

Physics - Please help!
Ironman steps from the top of a tall building. He falls freely from rest to the ground a distance of h. He falls a distance of h/ 3 in the last interval of time of 1.1 s of his fall. Hint: First, compute the velocity when Ironman reaches the height equal to the distance fallen...
October 22, 2010 by Anonymous

Physics
A 3.79 kg ball is dropped from the roof of a building 163.8 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 11.5 N on the ball. How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s2 . Answer in units of s.
December 17, 2010 by Sangita

physics
A penny is dropped from rest from the top of the Trump Tower in New York City. Considering that the height of the building is 283 m and ignoring air resistance, find the speed with which the penny strikes the ground.
September 6, 2012 by lennox

Physics
The ball is thrown upward with a speed of 38.0m/s from the top of a building 240 meters tall. How long will it take for this ball to reach the highest point?
September 8, 2011 by Anonymous

Math
Billy is standing 80 feet from the base of a building. The angle of elevation to the top of the building is 35 degrees. If the distance from Billy's eyes to the ground is five feet, how tall is the building?
February 8, 2012 by Nikki

Physics
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 18.5o below the horizontal. It strikes the ground 3.30 s later. How far horizontally from the base of the building does the ball strike the ground? ...
February 5, 2012 by Lance

physics
A)A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 19.0o below the horizontal. It strikes the ground 2.50 s later. How far horizontally from the base of the building does the ball strike the ground? B)...
January 30, 2014 by Teddy

Physics
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 9.40 m/s and angle of 23.0 below the horizontal. It strikes the ground 5.00 s later. By how much does the ball clear or fall short (vertically) of clearing the ...
October 12, 2012 by Bill

Physics
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 9.40 m/s and angle of 23.0 below the horizontal. It strikes the ground 5.00 s later. By how much does the ball clear or fall short (vertically) of clearing the ...
October 12, 2012 by Bill

physics
please help me with this question " king kong carries a Fay Wrap up the 321-m-tall empire state building. at the top of the shyscraper, Fay Wrap's shoe falls from her foot. how fast will the shoe be movinig when it hits the ground?"
September 24, 2008 by lakesha

physics
A ball is thrown horizontally, with a speed of 20 m/s from the top of a 6.2 m tall hill. How far from the point on the ground directly below the launch point does the ball strike the ground?
October 28, 2010 by Ryan

physics
A ball is thrown horizontally, with a speed of 20 m/s from the top of a 6.2 m tall hill. How far from the point on the ground directly below the launch point does the ball strike the ground?
October 28, 2010 by Ryan

physics
an apple is dropped from the top of a building 75 m tall. at the same time a mango is thrown vertically up from the foot of the building with a velocity 30m/s. when and where will the apple and the mango meet?
September 13, 2012 by Anonymous

physics
A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=210^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides with the ground, and bounces back up. ...
April 30, 2013 by jfchfrhrc

physics
A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=210^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides with the ground, and bounces back up. ...
April 30, 2013 by jfchfrhrc

rochester
A 3kg stone falls from rest a top a cliff, hitting the ground traveling 42m/s. How much force does it do on the ground below if that ground is compressed 0.30 meters? (w= F*d=KE-PE)
June 10, 2013 by Joe

calculus
a ball is thrown upward at 96 feet per second from the top of a 100 foot building. 1.when will the ball obtain maximum height 2. when will the ball hit the ground?
October 24, 2011 by chris

calculus
A ball is dropped from the same height, but 20 feet away from the side of the building. The height y of the ball at time t is given by y(t) = 64 − 16t2. How fast is the shadow of the ball moving along the ground after 1 second?
September 27, 2010 by Anonymous

math
A 2 m tall person standing on the ground looks up at an angle of 34.0 o with the horizontal and sees the top of a tree and the top of a building aligned. The tree is 20 m away from the person, and the building is 51.0 m from the person
January 15, 2013 by tim

math
A 2 m tall person standing on the ground looks up at an angle of 34.0 o with the horizontal and sees the top of a tree and the top of a building aligned. The tree is 20 m away from the person, and the building is 51.0 m from the person
January 15, 2013 by tim

math
Katie is on the 15th floor of a building. She throws a ball straight down from the window, which is 220 feet above the ground. How fast must she throw the ball(in feet per second) for it to hit the ground in 3 seconds?
April 7, 2011 by diana

Physics
A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.2s for the tile to pass her window, whose height is 1.6m. How far above the top of this window is the roof?
January 7, 2010 by Anonymous

college algebra
A rubber ball is dropped from the top of a hole.Exactly 3.0 seconds later, the sound of the rubber ball hitting bottom is heard.How deep is the hole? HInt:- The distance that dropped object falls in t sec is represented by the formula s = 16t^2.The speed of sound is 1100 ft/sec
April 13, 2014 by Davone

Physics
A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.10 s for the tile to pass her window, which has a height of 1.18 m. How far above the top of this window is the roof?
September 10, 2012 by StressedStudent

physics
A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.12 s for the tile to pass her window, which has a height of 2.2 m. How far above the top of this window is the roof? m
September 21, 2012 by Anonymous

trig
From the foot of a building i have to look upwards at an angle of 22 degrees to sight the top of a tree. From the top of a building, 150 meters above ground level, I have to look down at an angle of depression of 50 degrees to look at the top of the tree. A) How tall is the ...
February 27, 2014 by Jiskha

Physics
A 3.0 kg block slides down a 4.5 m ramp of angle 30 degrees and collides inelastically with a 4.5 kg bolck at rest. Calculate the velocity after the collision.
March 3, 2013 by Josh

Physics
From the window of a building, a ball is tossed from a height y 0 above the ground with an initial velocity of 10.00 m/s and angle of 25.0 below the horizontal. It strikes the ground 3.60 s later. If the base of the building is taken to be the origin of the coordinates, with ...
October 10, 2013 by emanuel

physics
Now how far the will the ball in the problem below will hit the ground? a. 10m b. 6.4m c. 9.6m d. 20m e. 140m a ball rolls off the table top 2m tall. with a velocity of 10m/s. with what speed will it strike the ground? V^2 = Vo^2 + 2g*h V^2=0^2+2*9.8*2 V^2=39.2^2 v=6.3m/s
January 4, 2015 by Jacob

Physics
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 23.0 below the horizontal. It strikes the ground 6.00 s later. (Ignore air resistance.) (a) How far horizontally from the base of the building does the ...
October 13, 2009 by Maria

Physics urgent pls!
A ball is tossed from an upper-storey window of a building.The ball is given an initial velocity of 8 m/s at an angle of 20 degrees below the horizontal.it strikes the ground 3s later .(a) How far horizontally from the base of the building does the ball strike the ground? (b)...
February 22, 2013 by Sammie

math urgent!
Tyler is on the 15th floor of a building. She throws a ball straight down from the window, which is 220 feet above the ground. How fast must she throw the ball(in feet per second) for it to hit the ground in 3 seconds?
April 7, 2011 by lily

Trigonometry
a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 6130' and 5620' respectively. How high is the building?
July 11, 2013 by Paul

Trigonometry
a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 6130' and 5620' respectively. How high is the building?
July 11, 2013 by Paul

Math
Suppose you drop a ball from the top of a five-story building onto the sidewalk 70 ft below. a. What is the initial velocity of the ball? b. Determine a function for the height of the ball t seconds after it's released. c. How long will the ball be in the air before it hits ...
March 24, 2009 by SC

Calculus
I throw a ball off the roof. It travels s = 240+22t-t^2. S is the balls distance after I release it. How tall is the building? How high above the ground did the ball get?
November 16, 2013 by Loki

college physics1
A stone is dropped from rest from an infinitely tall building. Compute its velocity after 2 seconds
September 10, 2013 by jenny

Physics. LAST PROBLEM!!
A small metal ball with a mass of m = 82.5 g is attached to a string of length l = 1.72 m. It is held at an angle of θ = 58.5 with respect to the vertical. The ball is then released. When the rope is vertical, the ball collides head-on and perfectly elastically with an ...
March 26, 2013 by Elena

Calc
When a certain type of ball falls froma height of h onto a hard level surface, it bounce straight back up to a height of kh, where k is constant with 0<k<1. suppose this ball is dropped from an initial height h0 a) let the terms of the sequence {hn}from n=1 to infinity ...
April 21, 2014 by Stuck in Math

algebra1 HELP PLEASE
Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
July 8, 2013 by lisa

physics
An object was dropped from the top a tall building. During the last two seconds of the fall in traveled 80m. A) Find the total time of the fall. Assume that the gravitational acceleration is a constant 10m/s and air resistance is negligible. B) Calculate the height of the ...
October 30, 2010 by Tereza

Calculus
A fence 8 ft. tall runs parallel to a tall building at a distance 4 ft. from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
January 3, 2011 by Joe Schmo

Math
A fence 8 ft tall runs parallel to a tall building at a distance of 4 ft from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
November 14, 2011 by Emily

physics
Batman is standing on top of a 201 m tall building. He kicks off the building with a horizontal velocity of 10 m/s. Joker is driving a car towards the building at 40 m/s. What is batman's velocity at the point of impact (with respect to the ground)? How far away from the ...
October 30, 2011 by Juliet

Maths
A fence that is 4 metres tall runs parallel to a tall building at a distance of 1 metre from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
May 13, 2012 by Arjun

physics
1) a force of 10 N acts on a 5.0 kg object, initially at rest, for 2.5 s. What is the final speed of the object? 2) a 1500 kh car, is allowed to coast along a level track at a speed of 8.0 m/s. It collides and couples with a 2000-kg truck , initially at rest with brakes ...
November 29, 2010 by Joceylin

Math 9
A 6 m flagpole casts a 5 m shadow at the same time of the day as a building casts a 28m shadow. How tall is the building? I drew out a flag and a building, with a shadow coming from the top to the ground. What do i do next?
May 19, 2010 by Jen

physic
If A Ball Is Dropped From Rest And Falls 4 Meters In 0.8 Seconds, What Is The Final Velocity When It Reaches The 4 M?
November 29, 2009 by nesha

math
Suppose you drop a ball from the top of a five-story building onto the sidewalk 70 feet below. a. What is the initial velocity of the ball? b.Determine a function for the height of the ball t seconds after it's released. c. How long will the ball be in the air before it hits ...
October 13, 2010 by Sally

Math 10
Hello, I did this question for homework, but my teacher said it was wrong and she didn't explain how it was supposed to be done. So could you please tell me how I am supposed to do this step by step? "A baseball is thrown from the top of a building and falls to the ground ...
April 13, 2014 by Samantha

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