Friday

April 18, 2014

April 18, 2014

Number of results: 75,043

**Physics**

A ball thrown straight upward returns to its original level in 2.30 . A second ball is thrown at an angle of 38.0 degrees above the horizontal. What is the initial speed of the second ball if it also returns to its original level in 2.30 ?
*Sunday, September 27, 2009 at 1:56pm by Julia*

**physics**

A ball thrown straight upward returns to its original level in 2.50s. A second ball is thrown at an angle of 36.degrees above the horizontal. What is the initial speed of the second ball if it also returns to its original level in 2.50
*Saturday, September 17, 2011 at 3:54pm by elisa*

**science**

a ball is thrown straight upward and returns to the thrower's hand after 3.00s in the air. A second ball is thrown at an angle of 30.0 deg with the horizontal. At what speed must the second ball be thrown so that it reached the same height as the one thrown vertically?
*Tuesday, September 8, 2009 at 9:27pm by tani*

**Physics**

A ball is thrown straight upward and returns to the thrower's hand after 3.40 s in the air. A second ball is thrown at an angle of 29.0° with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown vertically?
*Wednesday, October 13, 2010 at 7:09pm by Sammy*

**physics**

A ball is thrown straight upward and returns to the thrower's hand after 2.20 s in the air. A second ball is thrown at an angle of 31.0° with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown vertically?
*Thursday, November 18, 2010 at 8:32pm by jennifer*

**Physics**

A ball is thrown straight upward and returns to the thrower’s hand after 2 s in the air. A second ball is thrown at an angle of 38 degrees with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown vertically? The ...
*Tuesday, February 5, 2013 at 7:07pm by chris*

**Physics **

A ball is thrown straight upward and returns to the thrower’s hand after 2.90 s in the air. A second ball is thrown at an angle of 32.0 ◦ with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown vertically? ...
*Saturday, December 3, 2011 at 3:30pm by Ryan *

**Physics please help!!!!!!!**

A ball is thrown vertically upward (assumed to be the positive direction) with a speed of 21.0 m/s from a height of 9.0 m. (a) How high does the ball rise from its original position? (b) How long does it take to reach its highest point? (c) How long does the ball take to hit ...
*Thursday, November 17, 2011 at 6:31pm by Steve*

**physics**

A ball is thrown straight upward and then returns to the earth. choosing the positive direction to be upward, sketch a graph of the velocity of this ball against time. where does the velocity change direction? Explain?
*Thursday, February 24, 2011 at 9:57am by jb*

**physics**

A ball is thrown straight upward from ground level. At what speed must the ball be thrown if it is to reach a maximum height 21 meters above the ground?
*Friday, February 7, 2014 at 3:30am by sean*

**physic**

A ball is thrown straight up and returns to its starting point in 5 second. What is the initial speed of the ball?
*Tuesday, July 12, 2011 at 11:07am by syida*

**physics**

A ball is thrown vertically upward with a speed of +12.0 m/s. How long does the ball take to hit the ground after it reaches its highest point? What is its velocity when it returns to the level from which it started?
*Saturday, May 14, 2011 at 2:04pm by anne*

**Physic **

A ball is thrown vertically upward with a speed of +12.0m/s. A. how long the ball take to hit the ground after it reaches it highest point? B. What is its velocity when it returns to the level from with it started?
*Wednesday, September 23, 2009 at 3:36am by Chan*

**algebra**

A ball is thrown upward with an initial velocity of 14 meters per second from a cliff that is high. The height of the ball is given by the quadratic equation H = 49t^2 + 14t +60 where h is in meters and t is the time in seconds since the ball was thrown. Find the time that the...
*Monday, March 4, 2013 at 8:00pm by Sherrydoug2*

**Physics**

A ball is thrown straight up from the ground with speed . At the same instant, a second ball is dropped from rest from a height , directly above the point where the first ball was thrown upward. There is no air resistance. Question- Find the value of in terms of and so that at...
*Friday, May 28, 2010 at 1:45pm by Anonymous*

**free fall**

A ball is thrown upward. While the ball is in the air, does its acceleration increase, decrease, or remains the same? Describe what happens to the velocity of the object from when it is thrown until when it returns.
*Thursday, September 11, 2008 at 10:16pm by Jon*

**physics**

two students are on a balcony 20.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way down. (Assume the ...
*Wednesday, March 2, 2011 at 11:20pm by fsfsf*

**physics**

two students are on a balcony 20.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way down. (Assume the ...
*Wednesday, March 2, 2011 at 11:21pm by fsfsf*

**Physical Science**

Four balls are taken to the top of a building. Ball 1 is dropped (zero initial velocity). Ball 2 is thrown straight up with a velocity of 3 m/s. Ball 3 is thrown straight out with a horizontal velocity of 3 m/s. Ball 4 is thrown straight down with a velocity of 3 m/s. Which ...
*Sunday, April 28, 2013 at 1:36pm by ayana*

**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 ...
*Friday, May 28, 2010 at 1:47pm by Anonymous*

**physics**

A ball is thrown upward at a speed v0 at an angle of 59.0¢ª above the horizontal. It reaches a maximum height of 8.7 m. How high would this ball go if it were thrown straight upward at speed v0?
*Thursday, October 6, 2011 at 6:28pm by randy*

**College Physics**

A ball is thrown upward at a speed v0 at an angle of 53° above the horizontal. It reaches a maximum height of 8.2 m. How high would this ball go if it were thrown straight upward at speed v0?
*Friday, September 30, 2011 at 3:06pm by Mira*

**physics**

A ball is thrown upward at a speed v0 at an angle of 52.0˚ above the horizontal. It reaches a maximum height of 7.3 m. How high would this ball go if it were thrown straight upward at speed v0?
*Saturday, February 18, 2012 at 7:53pm by Shelby*

**physics**

A ball is thrown upward at a speed v0 at an angle of 52.0˚ above the horizontal. It reaches a maximum height of 7.3 m. How high would this ball go if it were thrown straight upward at speed v0?
*Sunday, February 19, 2012 at 8:59pm by Shelby*

**physics**

a ball is thrown at an original speed of 8.0 m/s at an angle of 35 degrees above the horizontal. What is the speed of the ball when it returns to the same horizontal level?
*Wednesday, January 26, 2011 at 9:04pm by Anonymous*

**physics**

A ball is dropped from rest from the top of a building and strikes the ground with the speed Vf. From ground level, a second ball is thrown straight upward at the same instant that the first ball is dropped. The initial speed of the second ball is Vi=Vf, the same with which ...
*Monday, June 28, 2010 at 6:48pm by Katashia*

**Physics**

A ball is thrown vertically upward with a speed of 25.0 m/s from a height of 2.0 m. How high does the ball rise? How long does it take to reach its highest point? How long does the ball take to hit the ground after it reaches its highest point? What is the ball's velocity when...
*Sunday, September 24, 2006 at 10:28pm by Becca (question two of four!)*

**Physics**

A ball is thrown horizontally from a platform so that the initial height of the ball is 6.0 m above the level ground below. The ball lands 24 m from its original horizontal location. Find how fast the ball was thrown. Show work i just don't understand
*Wednesday, January 11, 2012 at 3:08am by Pat*

**Physics**

A ball is thrown horizontally from a platform so that the initial height of the ball is 6.0 m above the level ground below. The ball lands 24 m from its original horizontal location. Find how fast the ball was thrown. Show work i just don't understand
*Wednesday, January 11, 2012 at 11:32am by Pat*

**Algebra**

A ball is thrown upward with an initial velocity of 14 meters per second from a cliff that is high. The height of the ball is given by the quadratic equation where h is in meters and t is the time in seconds since the ball was thrown. Find the time that the ball will be 30 ...
*Monday, March 4, 2013 at 7:52pm by Sherry*

**Physics AP**

A ball is thrown straight upward with a speed of +12 m/s. A) what's the ball's acceleration just after it is thrown? B) how much time does it take for the ball to rise to its maximum height? C) what's the approximate maximum height the ball reaches?
*Saturday, September 15, 2012 at 9:15pm by Anna*

**physics**

a tennis ball is thrown vertically upward with an initial velocity of +8.0 m/s a) what is the velocity of the ball when it returns to its starting point? b) how long is the ball in the air? c) how high does the ball reach?
*Thursday, November 29, 2012 at 6:29pm by Isis*

**physics**

If a ball is thrown vertically upward with initial velocity of 8 meters per second, what would the speed be when it returns to the starting point with acceleration of 9.81?
*Monday, September 19, 2011 at 6:27pm by Kelli *

**Physics**

A ball is thrown vertically upward, starting at y = 0, with a velocity of 15.0 m/s. (a) Calculate the maximum vertical displacement of the ball. (b) Calculate the time required for the ball to reach its highest point. (c) What is the ball's acceleration when it is at its ...
*Sunday, September 25, 2011 at 11:17pm by Fawad*

**physics**

2. A ball is thrown vertically upward from the 15m level in an elevator shaft with an initial velocity of 20 m/s. At the same instant an open-platform elevator passes the 6m level, moving upward with a constant velocity of 2 m/s. Determine a. When and where the ball will hit ...
*Thursday, December 20, 2012 at 3:57am by anshuman kumar*

**pHYSICS**

A BALL IS THROWN STRIAGHT UPWARD AND RETURMS TO THE THROWER'S HAND AFTER 3 SECONDS IN THE AIR. A SECOND BALL IS THROWN AT AN ANGLE OF 30 DEGREES WITH THE HORIZONTAL. AT WHAT SPEED MUST THE 2ND BALL BE THROWN SO THAT IT REACHES THE SAME HIEGHT AS THE ONE THORWN VERTICALLY? I ...
*Wednesday, November 1, 2006 at 4:53pm by Jill Hefner*

**physicssss**

Ball is thrown vertically upward with a speed of 25.0 m/s. What is it's velocity when it returns to the level from which it had started ? After computations: The ball reaches its highest pt at 32.4 meters. It takes the ball 2.55sec to reach its highest pt. It take the ball 2....
*Sunday, September 26, 2010 at 9:14pm by CHELsea*

**physics**

A ball is thrown vertically upward with a speed of +13.0 m/s. (a) How high does it rise? (b) How long does it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity when it returns to the ...
*Thursday, September 15, 2011 at 10:47pm by ashley*

**physics**

A ball is thrown vertically upward with a speed of +10.0 m/s. (a) How high does it rise? m (b) How long does it take to reach its highest point? s (c) How long does the ball take to hit the ground after it reaches its highest point? s (d) What is its velocity when it returns ...
*Sunday, January 22, 2012 at 11:25pm by seanso*

**physics**

A ball is thrown vertically upward with a speed of +10.0 m/s. (a) How high does it rise? m (b) How long does it take to reach its highest point? s (c) How long does the ball take to hit the ground after it reaches its highest point? s (d) What is its velocity when it returns ...
*Monday, January 23, 2012 at 12:22am by seanso*

**physics**

A ball is thrown vertically upward with a speed of 19.0 m/s. (a) How high does it rise? m (b) How long does it take to reach its highest point? s (c) How long does the ball take to hit the ground after it reaches its highest point? s (d) What is its velocity when it returns to...
*Thursday, August 30, 2012 at 12:30am by roger*

**Physics**

A ball is thrown vertically upward with a speed of 15.0 m/s. (a) How high does it rise? (b) How long does it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity when it returns to the ...
*Friday, September 21, 2012 at 6:44pm by Kelly*

**Physics**

A tennis ball on Mars, where the acceleration due to gravity is 0.379 of a and air resistance is negligible, is hit directly upward and returns to the same level 6.20 later. (a)How high above its original point did the ball go? (b)How fast was it moving just after being hit?
*Monday, October 10, 2011 at 1:22pm by Bojian*

**Algebra 1**

A ball is thrown upward with an initial velocity of 35 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = -49t^2 + 35t + 140 where h is in meters and t is the time in seconds since the ball was thrown. Find the ...
*Thursday, March 7, 2013 at 7:13pm by Sherry*

**physics**

A ball is thrown at 19 m/s at 41° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was thrown? not quite ...
*Sunday, October 6, 2013 at 1:28pm by Louis*

**physics**

A ball is thrown at 19 m/s at 41° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was thrown? not quite ...
*Sunday, October 6, 2013 at 1:29pm by Louis*

**physics**

A ball is thrown upwards and returns to the same position. Compared with its original speed after release, its speed when it returns is about
*Friday, September 16, 2011 at 2:41am by Anonymous*

**physics**

A mass is dropped from a height of 30m, and at the same time from ground level (and directly beneath the dropped mass), and another mass is thrown straight up with a speed of 15 m/s. a) How far apart are the two masses after 0.5 s? b) Will the massses ever meet or pass each ...
*Thursday, August 31, 2006 at 11:15am by Sarah*

**physics**

one ball is dropped off a cliff. A second ball is thrown down 1 second later with an initial speen of 40 ft/sec. How long after the second ball is thrown will the second ball overtake the first?.
*Wednesday, May 11, 2011 at 8:43pm by Eric*

**Physics**

A tennis ball is thrown vertically upward with an initial velocity of +8.0 m/s. a. what will the ball's speed be when it returns to its starting point? b. how long will the ball take to reach its starting point?
*Wednesday, September 24, 2008 at 2:29am by Eli*

**Physics**

A tennis ball is thrown vertically upward with an initial velocity of 8.0 m/s. a) what will the ball's speed be when it returns to its starting point. b) how long will the ball take to reach it's starting point?
*Saturday, September 15, 2012 at 7:15pm by Anonymous*

**Math **

A ball is tossed straight upward with an initial velocity of 80 ft per second from a rooftop that is 12 feet above ground level . The height of the ball in feet at time t seconds is given by h(t)= -16t^2 +80t+12 find maximum height above ground level the ball reaches
*Sunday, February 10, 2013 at 9:16pm by Kiley *

**math**

An object that is falling or vertically projected into the air has it height, in feet, above the ground given by the formula below, where s is the height in feet, Vo is the original velocity of the object, in feet per second, t is the time the object is in motion in seconds, ...
*Friday, March 22, 2013 at 10:35pm by pam*

**science**

a cricket ball is thrown straight upward in the air at 14 m/s.determine the maximum height reached by the ball
*Sunday, January 20, 2013 at 5:32am by nkululeko*

**Physics**

A tennis ball is thrown vertically upward with an initial velocity of +7.0 m/s. What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s^2. Answer in units of m/s
*Wednesday, September 21, 2011 at 7:48pm by Vanessa*

**physics--HELP**

Use a(t)=-32 ft/s squared as the acceleration due to gravity. A ball is thrown vertically upward from the ground with an initial velocity of 56 feet per second. For how many seconds will the ball be going upward?
*Tuesday, October 9, 2007 at 11:00pm by Asia*

**Physics**

if a ball is thrown straight upward and is caught 5s after being thrown,how fast must it have been going when it left the person s hand?help
*Monday, January 17, 2011 at 1:24pm by Joel*

**math**

A ball is thrown from the edge of a cliff with an initial velocity of 60·m/s upward. Answer the following questions using + (upward) and - (downward) to indicate the direction of the velocity. Ignore air resistance and assume the ball does not hit the ground during the ...
*Thursday, October 13, 2011 at 7:49pm by jen*

**physics**

A ball is thrown vertically upward with an initial speed of 28 m/s. Then, 1.7 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 33.3 m/s. How far above the release point will the ball and stone pass each other? The ...
*Saturday, August 3, 2013 at 6:00am by vanessa*

**Physics**

A 0.421-kg ball has an elastic, head-on collision with a second ball that is initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? (b) What fraction of the original kinetic energy (ΔK/K) is ...
*Wednesday, June 6, 2012 at 9:04am by James*

**physics**

A ball rolls up a ramp which abruptly ends with the ramp dropping straight down. The ball launches off the end of the ramp while still traveling at an upward trajectory, goes through projectile motion, and returns to the same height as the base of the ramp. Ignoring any ...
*Sunday, November 1, 2009 at 9:45am by Sandhu*

**Physics**

A ball is thrown straight upward. At 6.30 m above its launch point, the ball’s speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
*Thursday, September 12, 2013 at 10:49pm by Briana*

**Physics**

A ball is thrown straight up in the air and passes a window 0.30s after being released. It takes 1.5s to go from the window to its maximum height and back down to the window. What was the initial velocity of the ball when it was released? I found where the ball would be after ...
*Thursday, August 25, 2011 at 5:09am by Kyle*

**Physics**

Kevin stands at the edge of a cliff, holding one ball in each hand. He throws one of the balls straight up with speed v, and at the same time he throws the other ball straight down, also with speed v. Ignoring air resistance, which ball hits the ground with greater speed? a)...
*Tuesday, October 26, 2010 at 12:21am by Gharib*

**math**

a ball is thrown upward at 64 feet per second from the top of an 80 feet high building. The height of the ball can be modeled by S(t) = -16t^2 + 64t + 80(feet), where t is the number of seconds after the ball is thrown. describe the graph model
*Sunday, October 7, 2012 at 8:46pm by nina*

**cal**

A ball is thrown directly upward from ground level with an initial velocity v(0) = 96 ft=s. Assuming that the ball’s only acceleration is that due to gravity (i.e., a(t) = ��32 ft=s2), determine the maximum height reached by the ball and the time it takes to ...
*Tuesday, May 3, 2011 at 10:15am by fcv*

**Physics**

At a certain instant, a ball is thrown downward with a velocity of 8.0 m/s from a height of 40 m. At the same instant, another ball is thrown upward from ground level directly in line with the first ball with a velocity of 12 m/s. Find (a) the time when the balls collide and (...
*Tuesday, February 26, 2013 at 10:13pm by Dan*

**physics**

An object is thrown straight up. At the same instant that the object reaches its maximum height, a second object is dropped from this maximum height. Which object hits the ground first and why? Also, a ball is thrown straight up. If the ball's initial velocity is considered ...
*Saturday, September 13, 2008 at 9:45pm by meg*

**Physics**

A ball is thrown straight up, when it reaches the maximum height x, a second identical ball is thrown up with the same initial velocity as the first one. Where will these balls meet.
*Wednesday, September 11, 2013 at 9:35pm by John*

**Physics**

A ball is thrown straight up, when it reaches the maximum height x, a second identical ball is thrown up with the same initial velocity as the first one. Where will these balls meet.
*Wednesday, September 11, 2013 at 9:35pm by John*

**physics**

A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 7.84 s. What is its initial velocity? Neglect air resistance.
*Tuesday, September 18, 2012 at 6:06pm by gary*

**Physics**

A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 7.99 s. What is its initial velocity? Neglect air resistance.
*Saturday, August 31, 2013 at 9:08pm by RW*

**Physics**

A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 7.99 s. What is its initial velocity? Neglect air resistance.
*Saturday, August 31, 2013 at 10:41pm by WR*

**physics**

The average velocity for a trip has a positive value. Is it possible for the instantaneous velocity at any point during the trip to have a negative value? (I'm thinking yes because derivatives can be negative but I'm not sure). also A ball is dropped from rest from the top of ...
*Friday, January 2, 2009 at 10:17pm by Anonymous*

**physics**

A ball thrown vertically upward has an upward velocity of 5.68 m/s at a point 11.9 m above where it was thrown. How long does the ball take to reach that point?
*Saturday, October 6, 2012 at 9:15pm by Anonymous*

**science**

The acceleration of gravity on the surface of Venus is 8.9m/s^2. Would a ball thrown upward on Venus return to the ground sooner or later than a ball thrown upward with the same speed on the earth?
*Friday, February 22, 2013 at 11:32pm by jake*

**math**

A ball is thrown upward with an initial velocity of 35 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = -49t^2 + 35t + 140 where h is in meters and t is the time in seconds since the ball was thrown. Find the ...
*Thursday, March 7, 2013 at 6:23pm by Please help me.*

**physical science**

The acceleration of gravity on the surface of Venus is 8.9 m/s2. Would a ball thrown upward on Venus return to the ground sooner or later than a ball thrown upward with the same speed on the earth?
*Thursday, July 5, 2012 at 10:52pm by sara*

**physical science**

the acceleration of gravity on the surface of venus is 8.9 m/s2. would a ball thrown upward from venus return to the ground sooner or later than a ball thrown upward with the same speed on the earth?
*Friday, September 14, 2012 at 7:37pm by tracey*

**Physics - projectile **

a ball is thrown straight up at 50 m/s. What speed will it be when it returns to the thrower's hand?
*Tuesday, November 19, 2013 at 7:34pm by Raina*

**Physics/ Precalculus**

If a ball is thrown upward from a building 30 m tall and the ball has a vertical velocity of 25 m/s, then its approximate height above the ground t seconds later is given by h(t) = 30 + 25t - 5t^2 a. After how many seconds does the ball hit the ground? b. What is the domain of...
*Monday, February 2, 2009 at 10:16pm by Gerrad*

**west chester university **

A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 8.26 s. What is its initial velocity? Neglect air resistance.
*Saturday, February 9, 2013 at 7:13pm by kayla *

**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?
*Monday, October 24, 2011 at 7:36pm by chris*

**Phizzics....**

A 0.250 kg ball is thrown straight upward with an initial velocity of 38 m/s. If air friction is ignored, calculate the: (a) height of the ball when its speed is 12 m/s (b) height to which the ball rises before falling (c) How would your answers to (a) and (b) change if you ...
*Thursday, May 10, 2012 at 8:13pm by blue ivy*

**Physics**

A 0.100 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a).what is the mass of the second ball? (b).What fraction of the original kinetic energy (ΔKE/KE) ...
*Sunday, January 2, 2011 at 8:34am by John *

**physics**

In a game of pool, the cue ball strikes another ball of the same mass and initially at rest. After the collision, the cue ball moves at 3.10 m/s along a line making an angle of 27.0° with its original direction of motion, and the second ball has a speed of 2.30 m/s. Find (a) ...
*Monday, November 1, 2010 at 11:13pm by Vipre*

**physics**

a ball is thrown vertically upward with a speed 25.0m/s (a)How high does it rise? (b)How long does it take to reach its highes point? (c)How long does it take to hit the ground after it reaches its highest point? (d)What is its speed when it returns to the level from which it ...
*Wednesday, September 12, 2007 at 6:03pm by Anonymous*

**Algebra**

If a ball is thrown vertically upward from a height of 56ft. above ground with an initial velocity of 40ft. per second, then the height of the ball above ground t seconds after it is thrown is given by f(t)=-16t^2 + 40t +56. How many seconds will elapse after the ball is ...
*Friday, October 21, 2011 at 5:32pm by Velocity per second*

**civil engineering**

A stone (on the edge of the roof) thrown from the top of a building is given an initial velocity of 20.0 m/s straight upward. The building is 50.0 m high, as shown in Fig. 4. Using tA = 0 as the time the stone leaves the thrower’s hand at position ○A . The gravitational ...
*Monday, April 1, 2013 at 7:09am by hamze*

**Algebra **

If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=-16t^2+vt+s(where h and s are in ft, t is in seconds and v is in ft/sec) a ball is thrown upward with initial velocity of 96 ft/sec...
*Friday, April 27, 2012 at 1:49pm by Billy*

**Algebra 2**

If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=-16t^2+vt+s(where h and s are in ft, t is in seconds and v is in ft/sec) a ball is thrown upward with initial velocity of 96 ft/sec...
*Saturday, April 28, 2012 at 11:39pm by Billy*

**physics**

A ball is thrown upward. It leaves the hand with a velocity of 13.8 m/s, having been accelerated through a distance of 0.495 m. Compute the ball's upward acceleration, assuming it to be constant. upward
*Thursday, September 15, 2011 at 4:07pm by austin*

**Physics**

A 0.280 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? (b) What fraction of the original kinetic energy (ΔKE/KE) ...
*Wednesday, November 11, 2009 at 2:12pm by Ashley*

**Physics**

A stone is thrown directly upward from rest from ground level with initial speed 20.0 m/s; 1.50 s after that, a second stone is thrown directly upward from ground level with initial speed 18.0 m/s. (a) When are the stones at the same height? (b) What are the velocities of the ...
*Sunday, January 26, 2014 at 10:31pm by Nick*

**physics**

ll is thrown vertically upward with an initial speed of 16 m/s. Then, 0.65 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 27 m/s. How far above the release point will the ball and stone pass each other? The ...
*Wednesday, September 18, 2013 at 10:47pm by safari*

**physics**

ll is thrown vertically upward with an initial speed of 16 m/s. Then, 0.65 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 27 m/s. How far above the release point will the ball and stone pass each other? The ...
*Wednesday, September 18, 2013 at 10:49pm by safari*

**Science**

A ball is thrown from a cliff at a horizontal speed of 3m/second and at the same time a second ball is dropped straight down from the cliff. How fast will the dropped ball be going after 2 seconds?
*Monday, October 26, 2009 at 8:46pm by Steve Felton*

**Calculus**

A ball is thrown vertically upward with an initial velocity of 135 feet per second, the ball’s height after t second is s(t) = 135t – 22t How to calculate average velocity from 1 to 3 seconds?
*Saturday, March 22, 2014 at 12:34am by Zack*

**Physics**

On some planet other than Earth a ball is thrown upward at a velocity of 22.3 m/s. It returns back to the exact position that it started at in 8.8s. What is this planets value for "g"? (
*Tuesday, September 25, 2012 at 8:15pm by Brooke*

**physics**

A man throws a ball straight up in the air with an initial speed of 24 meter per second. How long does it take for the ball to return to him? What is the maximum height of the ball above the point where it was thrown?
*Tuesday, December 6, 2011 at 10:02pm by r*

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