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April 21, 2014

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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

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 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
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

physics
A ball is thrown vertically upward with an initial speed of 20 m/s. Two seconds later, a stone is thrown vertically (from the same initial height as the ball) with an initial speed of 24 m/s. At what height above the release point will the ball and stone pass each other?
Tuesday, September 16, 2008 at 2:34am by Derek

math
A ball is thrown vertically upward with a velocities of 18 m/s. Two seconds later another ball is thrown upwards with a velocity of 13.5 m/s. At what position above the ground will they meet?
Monday, July 30, 2012 at 2:18am by paramesh

Dynamics
A ball is thrown vertically upward with a velocities of 18 m/s. Two seconds later another ball is thrown upwards with a velocity of 13.5 m/s. at what position above the ground will they meet?
Monday, July 30, 2012 at 7:08am by DHilsath

BTech, Mechanical
A ball is thrown vertically upward with velocities of 18 m/s. Two seconds later another ball is thrown upwards with a velocity of 13.5 m/s. At what position above the ground will they meet?
Monday, July 22, 2013 at 11:54am by Seetharaman

Physics/Science #3
A ball is thrown vertically downward from the top of a 35.9-m tall building. The ball then passes the top of a window that is 10.7 m above the ground 2.00 s after being thrown. What is the speed of the ball as it passes the top of the window? The equation for the speed of the ...
Thursday, January 25, 2007 at 4:14pm by TechnoBoi11

Physics
Two students are on a balcony 19.6 m above the street. One student throws a ball (ball 1) vertically downward at 15.8 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the balcony on the way down...
Friday, May 13, 2011 at 12:08pm by Kelly

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

Physics
Two balls (Ball 1 and Ball 2) are released from the top of a tower. Ball 2 is thrown 3.14 seconds after Ball 1 is dropped. Ball 2 is thrown downward with a velocity of 3.49 m/s. Determine how far Ball 1 has fallen (to two decimal points) by the time Ball 2 is thrown.
Wednesday, September 12, 2012 at 8:03pm by Ashley

physics
Two students are on a balcony 18.3 m above the street. One student throws a ball (ball 1) vertically downward at 12.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the balcony on the way down...
Monday, August 29, 2011 at 2:47am by B

physics
Two students are on a balcony 18.3 m above the street. One student throws a ball (ball 1) vertically downward at 12.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the balcony on the way down...
Monday, August 29, 2011 at 2:51am by B

physics
They don't tell you the angle (measured above horizontal) that the ball was thrown, but you can figure it out. For a ball thrown horizontally, the distance fallen (vertically) is Y = (g/2) t^2 = 17.9 m Since that is also the height of the building, it WAS thrown horizontally. ...
Friday, December 11, 2009 at 4:00am by drwls

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
A ball thrown vertically upward is caught by the thrower after 2 seconds. Find the initial velocity of the ball and the maximum height the ball reaches???!!
Thursday, September 18, 2008 at 5:45pm by mb

Physics
The ball is thrown vertically upwards from the height of 14.1 meters. It takes 3 seconds till the ball hits the ground. What is the initial speed of the ball?
Thursday, September 13, 2012 at 11:17am by Luise

Maths nd science
A ball is thrown vertically upwards.It takes 4 s for the ball to return to the thrower's hand now what is thb maximum height reached by the ball.
Thursday, January 17, 2013 at 2:19pm by Felicia

kinetics
a ball of mass 200 g is thrown vertically upwards with a velocity of 20ms-1 ignoring air resistance. a) calculate the kinetic energy of the ball as it is released b)calculate the maximum height reached by the ball c) state the velocity of the ball when it returns to its ...
Thursday, March 8, 2012 at 6:02pm by dmkp

kinetics
a ball of mass 200 g is thrown vertically upwards with a velocity of 20ms-1 ignoring air resistance. a) calculate the kinetic energy of the ball as it is released b)calculate the maximum height reached by the ball c) state the velocity of the ball when it returns to its ...
Friday, March 16, 2012 at 6:12am by dmkp

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

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

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

Physics
A ball bounces vertically on the ground after being thrown vertically up into the air by a boy standing on the edge of a building
Wednesday, February 1, 2012 at 2:30pm by Deli

Physics
A ball is thrown vertically upward with a speed of 48.5m/s. What is the ball's velocity after 1.50s? ** B). what is the ball's height after 1.5 s?
Sunday, September 30, 2012 at 7:57pm by joane

Physics
A ball is thrown vertically upward with a speed of 48.5m/s. What is the ball's velocity after 1.50s? b) What is the ball's height after 1.5s?
Saturday, September 29, 2012 at 1:17pm by joane

physics
A student throws a ball vertically upward such that it travels 7.5 to its maximum height.If the ball is caught at the initial height 2.3 after being thrown, what is the ball’s average speed? What is the ball’s average velocity?
Thursday, February 17, 2011 at 1:22pm by Anonymous

physics
A 3.00 kg ball is thrown vertically into the air with an initial velocity of 15.0 m/s. The maximum height of the ball is
Thursday, September 2, 2010 at 6:19pm by Anonymous

phy
regarding #5: That answer would be correct if both balls were thrown at the same time. The problem states the red ball was thrown downward 2.6 seconds after the blue ball was thrown. One solution is to determine the position and velocity of the blue ball at the time the red ...
Tuesday, September 13, 2011 at 12:22am by Jack

Physics
Two students are on a balcony 24.3m above the street. One student throws a ball, B1, vertically downward at 12.5 m/s. At the same instant, the other student throws a ball, B2, vertically upward at the same speed. The second ball just misses the balcony on the way down. A.) ...
Monday, February 14, 2011 at 6:01pm by Aidan

college physics
A 3.00 kg ball is thrown vertically into the air with an initial velocity of 15.0 m/s. The maximum height of the ball is
Thursday, September 2, 2010 at 6:19pm by Anonymous

physics
A 0.50 kilogram ball is thrown vertically upward with an initial kinetic energy of 25 joules. Approximately how high will the ball rise ?
Saturday, April 30, 2011 at 4:17pm by lucy

calculus
a woman throws a ball vertically upwards so that 4seconds elapse before it strikes the ground. Determine the maximum height of the ball and the velocity with which the ball was thrown. Assume that the acceleration due to gravity is 10m/s squared and neglect the effect of air ...
Thursday, December 6, 2012 at 11:33pm by Tatjana

physics
A ball is thrown vertically upward with a speed of 26.8 m/s from a height of 1.9 m. How long does the ball take to hit the ground after it reaches its highest point?
Wednesday, September 28, 2011 at 9:17pm by Kelsi

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

Physics
Part 1: Two balls (Ball 1 and Ball 2) are released from the top of a tower. Ball 2 is thrown 3.14 seconds after Ball 1 is dropped. Ball 2 is thrown downward with a velocity of 3.49 m/s. Determine how far apart Ball 1 and Ball 2 are after 5.02 seconds from when Ball 1 was ...
Wednesday, September 12, 2012 at 8:14pm by Ashley

Physics
Part 1: Two balls (Ball 1 and Ball 2) are released from the top of a tower. Ball 2 is thrown 3.14 seconds after Ball 1 is dropped. Ball 2 is thrown downward with a velocity of 3.49 m/s. Determine how far apart Ball 1 and Ball 2 are after 5.02 seconds from when Ball 1 was ...
Wednesday, September 12, 2012 at 8:20pm by Ashley

Physics
A rock is dropped from a height of 100 meters above the ground. One second later, a ball is thrown vertically downwards, from the same height, with an initial speed of 13 m/s. How long after the ball is thrown will the two objects be at the same location above the ground?
Wednesday, February 27, 2013 at 11:58pm by Cristian

Physics
A rock is dropped from a height of 100 meters above the ground. One second later, a ball is thrown vertically downwards, from the same height, with an initial speed of 13 m/s. How long after the ball is thrown will the two objects be at the same location above the ground?
Wednesday, February 27, 2013 at 11:59pm by Cristian

physics
A student throws a ball vertically upward such that it travels 7.4m to its maximum height. Part A If the ball is caught at the initial height 2.7s after being thrown, what is the ball’s average speed? Part B What is the ball’s average velocity?
Thursday, September 5, 2013 at 2:22am by Anonymous

physics
a 0.40kg ball is thrown vertically upward with a speed of 30m/s. The ball reaches a height of 40m. What is the energy dissipated due to air friction?... please help i don't know what to do:(
Tuesday, April 7, 2009 at 7:31pm by julie

phusics
A ball is thrown vertically upward from top of a building with speed of 20m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building.
Monday, February 14, 2011 at 8:24pm by mark matat

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

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

Math
The height(h) of an object that has been dropped or thrown in the air is given by: h(t)=-4.9t^2+vt+h t=time in seconds(s) v=initial velocity in meters per second (m/s) h=initial height in meters(m) A ball is thrown vertically upwardd from the top of the Leaning Tower of Pisa (...
Wednesday, April 4, 2012 at 4:24pm by NeedHelp

Physics
Two students are on a balcony 19.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. Att 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. What is the ...
Sunday, September 24, 2006 at 10:38pm by Becca (question four of four!)

physics
from the top of a tower P,a ball is thrown vertically upwards.when the ball reaches a distance h below P,its speed is double of what it was at height h above P.show that the greatest height attained by the ball above P is 5h/3.
Thursday, August 25, 2011 at 6:43pm by armando

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

Physics
A ball is dropped from rest from a height of 20.0 m. One second later a second ball is thrown vertically downwards. If the two balls arrive on the ground at the same time, what must have been the initial velocity of the second ball?
Sunday, August 28, 2011 at 2:55am by Anonymous

Phyics
A Rock Is Thrown Vertically upward with a speed of 12m/s. Exactly 1.00s later a ball is thrown up vertically along the same path with a speed of 18m/s. At what time will they strike each other? so far I got this but it does not seem to be working out for me. G=-9.80m/S^2 Y1=0+...
Wednesday, September 16, 2009 at 3:56pm by Joshua

Physics
A ball is thrown vertically upwards with an initial velocity of 27.0 m/s. Neglecting air resistance, how long is the ball in the air?
Sunday, January 23, 2011 at 4:15pm by Megan

Physics
A ball is thrown vertically upwards with an initial velocity of 27.0 m/s. Neglecting air resistance, how long is the ball in the air?
Sunday, January 23, 2011 at 4:39pm by Megan

Physics
A ball is dropped from rest from a height of 20.0m. One second later a second ball is thrown vertically downwards. If the two balls arrive on the ground at the same time, what must have been the initial velocity of the second ball?
Friday, August 31, 2012 at 3:30pm by Alex

Physics
A ball is dropped from rest from a height of 20.0m. One second later a second ball is thrown vertically downwards. If the two balls arrive on the ground at the same time, what must have been the initial velocity of the second ball?
Friday, August 31, 2012 at 3:30pm by Alex

Physics
Two students are on a balcony 24.9 m above the street. One student throws a ball, b1, vertically downward at 19.6 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on the way down. (a) ...
Thursday, September 29, 2011 at 5:41pm by Chris

physics
Two students are on a balcony 21.4 m above the street. One student throws a ball, b1, vertically downward at 13.2 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on the way down. (a) ...
Tuesday, September 4, 2012 at 8:07pm by Shaina

physics
Two students are on a balcony 24.4 m above the street. One student throws a ball, b1, vertically downward at 20.3 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on the way down. (a) ...
Tuesday, September 11, 2012 at 12:14am by morgan

physics
Two students are on a balcony 24.4 m above the street. One student throws a ball, b1, vertically downward at 20.3 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on the way down. (a) ...
Tuesday, September 11, 2012 at 12:14am by morgan

Physics
Two students are on a balcony 24.3 m above the street. One student throws a ball, b1, vertically downward at 15.8 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on the way down. (a) ...
Tuesday, October 9, 2012 at 9:39pm by Mel

Physics
Two students are on a balcony 22.3 m above the street. One student throws a ball, b1, vertically downward at 19.2 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on the way down. (a) ...
Wednesday, October 10, 2012 at 6:51pm by .

physics
plz anyway help me for the solution of this question. from the top of a tower P,a ball is thrown vertically upwards.when the ball reaches a distance h below P,its speed is double of what it was at height h above P.show that the greatest height attained by the ball above P is ...
Saturday, September 10, 2011 at 7:54pm by jack

science
hey how u all doin? If a ball is thrown vertically upwards into the air. What is the main energy conversion that takes place as the ball rises towards its maximum height? thanks carl
Wednesday, December 10, 2008 at 10:34am by carl

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

Physics
Two students are on a balcony 20.5 m above the street. One student throws a ball (ball 1) vertically downward at 11.1 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the balcony on the way down...
Thursday, May 12, 2011 at 12:19pm by Rachel

Physics
A ball is thrown vertically upward from a bridge 70 meters above the river with a velocity of 44 m/s. How high above the water did the ball rise?
Wednesday, October 21, 2009 at 4:57pm by Hillary

Physics
A ball is thrown vertically upward with a speed of 25.4 m/s from a height of 2.1 m. (Remember gravity is a=9.8m/s^2) How long does the ball take to hit the ground after it reaches its highest point? Answer in units of s.
Wednesday, September 15, 2010 at 10:26pm by Jennifer

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

Physics
8. A 0.5-kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of each force acting on the ball while it is traveling upward?
Monday, March 7, 2011 at 9:36pm by Nicola

Physics
8. A 0.5-kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of each force acting on the ball while it is traveling upward?
Monday, March 7, 2011 at 9:36pm by Nicola

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

Math( help please ! )
The height of a ball thrown vertically upward from a rooftop is modelled by h(t)=-5t^2=20t=50, where h(t) is the ball's height above the gorund,in meters, at time t seconds after the throw a) determine the maximum height of the ball b) how long does it take for the ball to ...
Monday, October 17, 2011 at 4:52pm by Erin

Math( help please ! )
The height of a ball thrown vertically upward from a rooftop is modelled by y=-5t^2+20t+50 , where h(t) is the ball's height above the ground , in meters , at time t seconds after the throw a) Determine the max height of the ball b) how long does it take for the ball to reach ...
Monday, October 17, 2011 at 10:28pm by Melissa

physics
A ball is thrown vertically upwards with an initial velocity of 20.96 m/s. Neglecting air resistance, how long is the ball in the air? What is the greatest height reached by the ball? this problem seems easy enough but I can't seem to get the answer. How can I get time using ...
Wednesday, January 16, 2008 at 6:17pm by courtney

Math-
A ball is thrown vertically upward with an initial velocity of 96 feet per second. The distance s (in feet) of the ball from the ground after t seconds is s(t)=96t-16t^2 a.) at what time will the ball strike the ground b.) for what time t is the ball more than 128 feet above ...
Sunday, March 25, 2012 at 8:51pm by danielle

physics
A ball is thrown vertically into the air and when it returns after an interval of 2 seconds it is caught. What is the acceleration of the ball after leaving the hand? I have no idea how to solve this!
Sunday, September 27, 2009 at 12:21pm by Jake

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
Two students are on a balcony 29.4 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 29.4 m/s . The second ball just misses the balcony on the way down. a) Sketch the ...
Saturday, October 23, 2010 at 8:57pm by grace

calculus
if a ball is thrown vertically upward with an initial velocity of 48 ft/s, then its height, s, after t seconds is given by s(t)= 48t-16t^2. a) what is the velocity of the ball after 1 second? b) when does the ball hit the ground? c) with what velocity does the ball hit the ...
Monday, April 8, 2013 at 1:21am by moises

Math
The height(H) of an object that has been dropped or thrown in the air is given by: H(t)=-4.9t^2+vt+h t=time in seconds(s) v=initial velocity in meters per second (m/s) h=initial height in meters(m) H=height h=initial height I didn't make this clear on the last post sorry. A ...
Wednesday, April 4, 2012 at 5:58pm by Anonymous

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!)

CALCULUS
if a ball is thrown vertically upward with a velocity of 80m/s then its height after t seconds is s=80t-16t^2 a) what is the maximum height reached by the ball? b)what is the velocity of the ball when it is 96 ft above the ground on its way up? on its way down?
Sunday, October 28, 2007 at 9:22pm by matttt

Physics
a ball is thrown vertically upward from the ground with the velocity of 30m/s. a) how long will it take to rise to its highest poitn? b) how high does the ball rise? c) how long after projection will the ball have a velocity of 10m/s? d) what is the total time of flight?
Monday, July 19, 2010 at 7:22am by Patrick

AP Physics
A ball of mass 0.1 kg is attached to a rubber band, which we can model as a spring of stiffness 8 N/m. With one end of the rubber band fixed, you throw the ball vertically upward with an initial speed of 14 m/s. At the moment the ball leaves your hand, the rubber band is ...
Thursday, January 20, 2011 at 9:30pm by Anonymous

Physics
A ball is thrown vertically upward with a speed of 1.53 m/s from a point 4.21 m above the ground. Calculate the time in which the ball reach the ground. I'm figuring I have to do something with 9.80 which is gravity but I don't know what.
Monday, April 14, 2008 at 12:57pm by Jon

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
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

physics
a ball is thrown at an angel of 40 degee above tghe horizontal.the ball clears the fence whis is 85 metre away.what is the inital velosity of the ball if we assume the ball is thrown at the same elevation of the fence
Saturday, March 10, 2012 at 10:47pm by raj

Algebra
THe function h(t)=-16t^2+v0t+h0 describes the height in feet above the ground h(t) of an object thrown vertically from a height of h0 feet, with an initial velocity of v0 feet per second, if there is no air friction and t is the time in seconds sine the object was thrown. A ...
Monday, April 19, 2010 at 9:33pm by Joe

Algebra
THe function h(t)=-16t^2+v0t+h0 describes the height in feet above the ground h(t) of an object thrown vertically from a height of h0 feet, with an initial velocity of v0 feet per second, if there is no air friction and t is the time in seconds sine the object was thrown. A ...
Monday, April 19, 2010 at 9:34pm by Joe

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

Intermediate algebra
If a ball is thrown vertically upward from the ground, with an initial velocity of 64 ft/s, it's height h after t seconds is given by h=-16t^2+64t how long does it take the ball to return to the ground?
Tuesday, October 23, 2012 at 11:36pm by Help now!!

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

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