
math
A ball is thrown into the air with an upword velocity of 36 ft/s. Its hight H in feet after t seconds is given by the function h=16t^2+36t+9. In how many seconds does the ball reach its maximum height? Round to the nearest hundredth if necessary. What is
asked by please help on December 2, 2014 
physics
A ball is thrown vertically upword with an initial velocity of 40m/s (1) calculate 1 it velocity after 3secs (2) the maximum height attend and the time taken to reach the maximum height (3) the total taken for the ball to return to the grand again
asked by TLIMAN on February 2, 2016 
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
asked by NeedHelp on April 4, 2012 
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
asked by Anonymous on April 4, 2012 
Math Help (URGENT X10)
This is really urgent so please please please help. 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)
asked by Anonymous on April 5, 2012 
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
asked by jen on October 13, 2011 
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
asked by courtney on January 16, 2008 
physics(please help)
There are a large ball and on top of it a small ball, when they both thrown together to high h, a large ball returns to hight h. To what hight does small ball reflect? (using hoec)
asked by *CAREY~* on February 26, 2008 
Physics
A ball is thrown from ground level up in the air at 61m/s. How fast is the ball going 1s after being thrown. This problem wants you to use the formula v = (1/2)gt^2 + v_0 g=9.8m/s^2 and v_0 = 61m/s so v = (1/2)g*(1s)^2 + 61m/s at t = 1. I wrote the
asked by Jennifer on September 14, 2006 
Calculus
1.if a ball is thrown into the air with a velocity of 35ft/s, it's height in feet after t seconds is given by y=35t10t^2. Find the averag velocity for the time period beginning when t=4 and lasting 0.05s. 2.if a ball is thrown into the air with a velocity
asked by Jacke on August 29, 2014 
physics
A ball is thrown straight upward and returns to the thrower's hand after 2.00 s in the air. A second ball thrown at an angle of 40.0° with the horizontal reaches the same maximum height as the first ball. (a) At what speed was the first ball thrown? m/s
asked by lisa on February 4, 2016 
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
asked by Ashley on September 13, 2012 
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?
asked by Isis on November 29, 2012 
Science
A ball thrown vertically upward and reached to thrower in 6sec what will be velocity and man maximum hight
asked by Shivansh on September 20, 2016 
physic
A ball is thrown straight upward and returns to the thrower's hand after 2.00 s in the air. A second ball thrown at an angle of 40.0° with the horizontal reaches the same maximum height as the first ball. (a) At what speed was the first ball thrown? m/s
asked by mark on February 3, 2016 
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
asked by ayana on April 28, 2013 
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.
asked by Jon on September 12, 2008 
Physics
A ball is thrown straight upward and returns to the thrower's hand after 2.30 s in the air. A second ball is thrown at an angle of 42.0° with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown
asked by Harley on June 4, 2014 
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
asked by jennifer on November 19, 2010 
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
asked by Sammy on October 13, 2010 
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
asked by tani on September 9, 2009 
physics
The fist ball is thrown up ward with avelocity of 20m/s at the same instant. The second ball is dropped at 40m hight from the first ball at what time the two ball collide each other?
asked by Abdu on December 13, 2011 
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
asked by Ryan on December 3, 2011 
Physics
a 1kg ball is thrown into the air with an initial velocity of 30 m/sec. how much kinetic energy does the ball have? how much potential energy does the ball have when it reaches the top of its ascent? how high into the air did the ball travel?
asked by Kim on November 22, 2009 
kinetics
a ball of mass 200 g is thrown vertically upwards with a velocity of 20ms1 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
asked by dmkp on March 16, 2012 
kinetics
a ball of mass 200 g is thrown vertically upwards with a velocity of 20ms1 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
asked by dmkp on March 8, 2012 
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
asked by chris on February 6, 2013 
physics
A ball is let fall from a hight h0.There are n collisions with the earth . If the velocity of rebound after n collisions is vn and the ball rises to a hight hn , then coefficient of restitution e is given by ,
asked by dharmapal on February 13, 2017 
calculus
velocity of a ball if a ball is thrown into the air with a velocity of 40 ft/s, its height (in feet) after t seconds is given by y=40t16t^2. find the velocity when t=2
asked by Anonymous on May 16, 2015 
physics
A ball is thrown straight upward and returns to the thrower's hand after 2.75 s in the air. A second ball thrown at an angle of 34.0° with the horizontal reaches the same maximum height as the first ball. (a) At what speed was the first ball thrown? ____
asked by randy on June 5, 2018 
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?
asked by Megan on January 23, 2011 
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?
asked by Megan on January 23, 2011 
Maths
When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 10t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height
asked by Anonymous on February 20, 2010 
math
im trying to help my son any help would be great When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed)
asked by joni on January 13, 2010 
math
a ball is thrown into the air at a speed of 96 feet/sec. The equation that expresses the height of the ball as a function of time is: h(t) = 16t2 + 96t + 5 How long does the ball stay in the air after it is thrown? (Round answer to the hundreths of a
asked by Erin on February 14, 2013 
maath HELPPPP
a ball is thrown into the air at a speed of 96 feet/sec. The equation that expresses the height of the ball as a function of time is: h(t) = 16t2 + 96t + 5 How long does the ball stay in the air after it is thrown? (Round answer to the hundreths of a
asked by Erin on February 14, 2013 
math
When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height
asked by Anne on June 15, 2010 
College algebra
When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height
asked by Dimpleface on June 16, 2010 
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
asked by fsfsf on March 3, 2011 
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
asked by fsfsf on March 3, 2011 
algebra
im trying to help my son i have no ida about this stuff any help would be great When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v”
asked by joni on January 13, 2010 
algebra
Library Assignment When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the
asked by hilda on January 18, 2010 
physics
A ball is dropped from 1.5m and bounces back up 1.2m. How many times will the ball bounce before it loses 90% of its energy? I figued since the ball bouced .8 times the original hight and 10% of 1.5m is .15m that that when the bounce hight reached.15m that
asked by Mark on March 21, 2011 
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.
asked by WR on September 1, 2013 
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.
asked by gary on September 18, 2012 
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 8.11 s. What is its initial velocity? Neglect air resistance.
asked by Sandra on April 7, 2015 
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.
asked by kayla on February 10, 2013 
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.
asked by RW on September 1, 2013 
physics
A ball is thrown vertically upwards with a velocity of 2 m/s. It is seen at height h twice. Find the sum of the times, measured in seconds from the moment the ball is thrown, at which it is seen at height h. Take g=10m/s² Neglect air resistance.
asked by un on June 9, 2017 
Physics
A ball is thrown straight upward and returns to the thrower’s hand after 2.3 s in the air. A second ball is thrown at an angle of 60◦ with the horizontal. At what speed must the second ball be thrown so that it reaches the same maximum height as the
asked by Lauren on December 27, 2014 
dynmic
Ball A is thrown vertically upwards with a velocity of 30m/s from the ground. After 3 seconds ball B is also thrown vertically upwards with a velocity of 50m/s from the ground. Determine the time at which ball A and B will meet in air. Step by step
asked by abd on November 7, 2016 
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
asked by Gharib on October 26, 2010 
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
asked by Joe on April 20, 2010 
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
asked by Joe on April 20, 2010 
physics
a ball is thrown up with an initial velocity 20m/s. using g=10m/s2, a) what's the maximum height it can reach. b) what is the magnitude and direction of the ball's velocity 1 second after it is thrown. c) what is the magnitude and direction of the ball's
asked by jennifer on September 12, 2011 
math
A person standing on the roof of a building throws a ball directly upward. The ball misses the rooftop on its way down and eventually strikes the ground. The function s(t) = −16t2 + 64t + 80 describes the ball’s height above the ground, s(t) , in feet,
asked by faith on December 16, 2011 
physics
A ball is thrown vertically up from the edge of a 150 m building with a veloicty of 10m/s. (A) how high did the ball rise? (b) how much time did it take fort he ball to reach this height ? (C) what is the velocity oft he ball as it strikest he ground ? (D)
asked by christoper allen on December 21, 2014 
Physics
A ball is thrown directly upward with an initial velocity of 14 m/s. If the ball is released from an initial height of 2.8 m above ground, how long is the ball in the air before landing on the ground? Ignore air drag.
asked by Logan on September 2, 2011 
Physics
A ball is thrown directly upward with an initial velocity of 12 m/s. If the ball is released from an initial height of 2.9 m above ground, how long is the ball in the air before landing on the ground? Ignore air drag.
asked by Bland on June 20, 2012 
math
your friend tosses a ball into the air at an initial velocity of 18 feet per second.The equation h=8t^2+18t+5 models the height h of the ball t seconds after it was thrown. When did the ball reach its highest point?
asked by alex on April 22, 2018 
Physics
A ball is thrown straight up into the air with a velocity of +20.5 m/s. Find the velocity of the ball after 2.5 s.
asked by Leasha on June 19, 2011 
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
asked by Jill Hefner on November 1, 2006 
Algebra
A ball is thrown into the air. The height in feet of the ball can be modeled by the equation h = 16t2 + 20t + 6 where t is the time in seconds, the ball is in the air. When will the ball hit the ground? How high will the ball go?
asked by Selena on June 2, 2014 
Physics
A ball is thrown horizontally from the top of a 65 m building and lands 105 m from the base of the building. Ignore air resistance, and use a coordinate system whose origin is at the top of the building, with positive y upwards and positive x in the
asked by Lauren HELP on September 12, 2014 
physics
a baseball is thrown at an angle of 25 degrees relative to the ground at a speed of 23.0 m/s. if the ball was caught 42.0 m from the thrower, how hight was the tallest spot in the ball's path?
asked by Zoomba21 on October 5, 2009 
physics
A 0.73 kg ball is thrown straight up with an initial velocity of 2.50 m/s. Taking the potential energy of gravity to be zero at the height from which the ball is thrown, determine its gravitational potential energy at the balls highest point. Ignore air
asked by nate on October 5, 2012 
Physics
Two baseballs are thrown off the top of a building that is 7.24 m high. Both are thrown with initial speed of 63.3 mph. Ball 1 is thrown horizontally, and ball 2 is thrown straight down. What is the difference in the speeds of the two balls when they touch
asked by Gina on September 21, 2010 
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
asked by blue ivy on May 11, 2012 
8th grade physical science
What is the kinetic energy of a 1 kilogeram ball is thrown into the air with a velocity of 30m/sec? How much potential energy does the ball have when it reaches the top of its ascent? How high into the air did the nall travel? Please help me help my child
asked by Misty on January 19, 2012 
calculus
If a ball is thrown straight up into the air with an initial velocity of 70 ft/s, it height in feet after t second is given by y = 70 t  16 t^2. Find the average velocity for the time period begining when t = 1 and lasting (i) 0.1 seconds (ii) 0.01
asked by Anonymous on September 15, 2011 
calc
a ball with mass 0.15 kg is thrown upward with initial velocity 20 m/sec from the roof of a building 30 m high. there is a force due to air resistance of v/30, where velocity v is measured in m/sec. a. find the maximum height above the ground the ball
asked by cyrus on November 9, 2008 
Physics
A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 21.0 m/s? Where is the ball after 2.00 s? vertical m from the ground? If the ball is still in the air, how long before it hits the ground? (If the ball is
asked by Anonymous on January 29, 2012 
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
asked by morgan on September 11, 2012 
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
asked by morgan on September 11, 2012 
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
asked by Mel on October 10, 2012 
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
asked by Chris on September 29, 2011 
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
asked by Shaina on September 5, 2012 
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
asked by . on October 10, 2012 
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
asked by Anonymous on September 2, 2010 
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
asked by Anonymous on September 2, 2010 
Calculus
The height, s, of a ball thrown straight down with initial speed 32 ft/sec from a cliff 48 feet high is s(t) = 16t^2  32t + 48, where t is the time elapsed that the ball is in the air. What is the instantaneous velocity of the ball when it hits the
asked by nrosen on October 13, 2015 
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
asked by Ashley on September 13, 2012 
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
asked by Ashley on September 13, 2012 
physics
A ball is thrown upward and has a velocity of 67.8 ft/s after 1.0s. After 3.0s, the ball's velocity is 3.4 ft/s. Find the acceleration (in ft/s2) and initial velocity (in ft/s) of the ball. Complete the equation of motion for the velocity of the ball: v(t)
asked by sai on July 31, 2017 
Physics
A ball is thrown up in the air with an initial velocity of 15m/s from a 17m high platform Find Maximum height reached by the ball Time of flight if the ball is catched Time of flight when it strike the ground Velocity when it returns to the hand Velocity
asked by Carmieee on August 14, 2017 
Physics ~IMPULSE~
a) A tennis racket a 450 N force on a 0.05 kg tennis ball over a 0.006 s time period. What is the impulse applied to the ball? b) A ball (0.5 kg) is thrown with a velocity of 15 m/s. A receiver catches the ball and brings it to rest is 0.02 s. a) What is
asked by Isis on February 17, 2013 
math
If a ball is thrown straight up into the air with an initial velocity of 95 ft/s, it height in feet after t second is given by y=95t–16t2. Find the average velocity for the time period begining when t=1 and lasting (i) 01 seconds: (ii) 001 seconds: (iii)
asked by Jin on August 11, 2010 
Physics
A ball is thrown straight up in the air with a speed of 30 m/s. How much time does it take for the ball to return to the thrower? The acceleration due to gravity has an exact value of 9.8 m/s2, but you may use 10 m/s2. Hint: what would the final velocity
asked by Anonymous on September 18, 2017 
Physics
A stone is thrown in the air with an initial velocity of 50 m/s at 37 degrees to the horizontal. Find the total time the ball is in the air.
asked by Jade on March 23, 2014 
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
asked by Kelly on May 13, 2011 
Physics
What is the velocity at the midway point of a ball able to reach a height y when thrown with an initial velocity v0? (Assume the ball is thrown upward and that up is the positive direction. Use the following as necessary: y and g. )
asked by emily on September 4, 2011 
Algebra
A ball is thrown into the air. The height h, in feet, of the ball can be modeled by the equation h= 16t^2+20t+6, where t is the time, in seconds, the ball is in the air. When will the ball hit the ground? first should I use x= b/2a?
asked by Casey on June 6, 2013 
Physics
A ball is thrown vertically upward and comes back down. Total time of 7.95 s in air. What is its initial velocity? Neglect air resistance.
asked by Jack Li on September 19, 2012 
help
Identify the function that models (ignoring air resistance) a ball being thrown in the air with an initial velocity of 70 ft/s, from a height of 5 feet.
asked by Anonymous on October 8, 2014 
physics
a 7 kg ball is thrown into the air from ground level with an initial velocity of 24m/s. Determine the ball's maximum height. Use conservation of energy. help!!!
asked by Isabelle on November 17, 2014 
physics
A blue ball is dropped from a height of 3.8 m above a classroom floor while a red ball held at the same height is thrown horizontally with a speed of 5 m/sec. Find The initial velocity and acceleration of each ball (the positive xdirection is the
asked by Anonymous on September 21, 2014 
phy
A ball is thrown from the window of a highrise building with an initial velocity of 6.1 m/s at an angle of 32 deg. below the horizontal. The bill strikes the ground 4.4 seconds after being thrown. Find the height from which the ball was thrown.
asked by Anonymous on October 6, 2010 
physical
A ball is thrown from the window of a highrise building with an initial velocity of 7.7 m/s at an angle of 34 deg. below the horizontal. The bill strikes the ground 4.2 seconds after being thrown. Find the height from which the ball was thrown.
asked by Anonymous on October 15, 2011 
Physics
A ball is tossed from an upperstory 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
asked by Maria on October 13, 2009 
Physics Grade12
two balls are juggled so that each ball is in the air for 1.800s, and the second ball is thrown up at the instant the first starts down. Find the height above the throwing hand where the two balls pass eachother, assuming gEarth=9.800m/s^2 I started with
asked by Bridget on February 25, 2016