Thursday

April 17, 2014

April 17, 2014

Number of results: 35,167

**physics**

A stone is thrown vertically upward with a speed of 11.5 m/s from the edge of a cliff 95.0 m high. (a) How much later does it reach the bottom of the cliff? (b) What is its speed just before hitting? (c) What total distance did it travel? For (c), the right answer is 108.46 m...
*Monday, October 11, 2010 at 11:12pm by hana*

**physics**

An object is projected vertically upwards with a velocity of 28m/s. Two seconds later, another object is thrown vertically upwards with a velocity of 32 m/s. When and where will the two objects meet?
*Wednesday, September 28, 2011 at 11:06pm by Lola312*

**physics**

aball is thrown vertically upward with a speed v from a height h above the ground. find the time taken for the ball to strike the ground.(consider acceleration due to gravity =g)
*Sunday, June 12, 2011 at 11:34am by pavatharani*

**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*

**physics**

An object is thrown vertically into the air with an applied force of 145N. what is the initial acceleration of the object?
*Tuesday, March 30, 2010 at 8:13pm by jake*

**physics**

Suppose a ball of mass m is thrown vertically upward with an initial speed v, its speed decreases continuously till it becomes zero. Thereafter, the ball begins to fall downward and attains the speed v again before striking the ground. It implies that the magnitude of initial ...
*Sunday, June 16, 2013 at 10:36am by Anonymous*

**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 thrown vertically upward with a speed of 25.0m/s.take acceleration due to gravity 10m/s-2. A how high does it rise B how long does it take to reach its highest point?
*Thursday, May 9, 2013 at 12:27pm by Sibula*

**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*

**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*

**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**

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*

**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*

**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*

**calculus 2**

An object thrown in the air on a planet in a distant galaxy is at height s(t) = -20t^2 +67t +42 feet at time t seconds after it is thrown. a) From what height was the object thrown? b) With what velocity was the object thrown? c) What is the acceleration due to gravity on this...
*Thursday, January 31, 2013 at 1:07am by Rachel*

**Physics**

A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 12.6 m higher than A, with speed v/2. Calculate the maximum height reached by the stone above point B. I am still stuck on this problem, mainly because I can't seem to get v/2. I ...
*Monday, October 15, 2007 at 6:24pm by Lindsay*

**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**

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/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 with ...
*Monday, February 14, 2011 at 4:14pm by Mark*

**EARTH SCIENCE**

A vertically upward thrown rock has a
*Tuesday, June 22, 2010 at 6:47pm by Anonymous*

**Physics**

A brick is thrown vertically upward with an initial speed of 4.40 m/s from the roof of a building. If the building is 74.0 m tall, how much time passes before the brick lands on the ground?
*Tuesday, February 2, 2010 at 3:50am by Alysse*

**physics**

A brick is thrown vertically upward with an initial speed of 5.00 m/s from the roof of a building. If the building is 112.0 m tall, how much time passes before the brick lands on the ground?
*Sunday, February 7, 2010 at 3:48pm by dale*

**Physics**

A brick is thrown vertically upward with an initial speed of 4.40 m/s from the roof of a building. If the building is 74.0 m tall, how much time passes before the brick lands on the ground?
*Friday, February 12, 2010 at 6:33am by Max*

**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**

object a does a freefall motion from an 80-m building and object b thrown upward from the base at the same time. they collide after 2s. find the initial velocity of object b. height is 80 m.
*Wednesday, January 9, 2013 at 7:50am by flay*

**general physics**

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/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 with ...
*Monday, February 14, 2011 at 4:16pm by mark matat*

**Physics**

61 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 29 m/s. If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after the collision if the ...
*Sunday, November 7, 2010 at 11:58am by Anonymous*

**Physics**

61 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 29 m/s. If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after the collision if the ...
*Sunday, November 7, 2010 at 4:46pm by matt*

**Physics**

A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 12.6 m higher than A, with speed v/2. Calculate the maximum height reached by the stone above point B. What equation can I use to get the maximum height?
*Friday, October 5, 2007 at 1:25pm by Lindsay*

**physics**

A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the speed of the ball immediately after the ...
*Sunday, October 21, 2012 at 5:17pm by Anonymous*

**physics**

A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the speed of the ball immediately after the ...
*Monday, October 22, 2012 at 9:04am by Anonymous*

**physics**

A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the speed of the ball immediately after the ...
*Monday, October 22, 2012 at 8:21pm by Anonymous*

**Physics**

An object is thrown vertically upward. a) What are its velocity and acceleration when it reaches its highest altitude? b) What is its acceleration on its way downward half a meter above the ground? My ans: a) velocity is zero and acceleration is 9.8 m/s^2 b) i am not sure but ...
*Saturday, October 17, 2009 at 8:58pm by Nikita*

**Physics**

An object is thrown vertically upward. a) What are its velocity and acceleration when it reaches its highest altitude? b) What is its acceleration on its way downward half a meter above the ground? My ans: a) velocity is zero and acceleration is 9.8 m/s^2 b) i am not sure but ...
*Sunday, October 18, 2009 at 4:01pm by Nikita*

**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--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**

A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 12.6 m higher than A, with speed v/2. Calculate the maximum height reached by the stone above point B. I was told the equation to this was "h=1/2(v2)^2/g." However, I’m still ...
*Sunday, October 7, 2007 at 5:55pm by Lindsay*

**physics**

A small rock is thrown vertically upward with a speed of 13.0from the edge of the roof of a 37.0 tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be neglected. A) What is the speed of the rock just before ...
*Monday, September 3, 2012 at 5:30pm by joe*

**Physics**

A brick is thrown vertically upward with an initial speed of 4.40 m/s from the roof of a building. If the building is 74.0 m tall, how much time passes before the brick lands on the ground? I don't get how to solve it still
*Tuesday, February 2, 2010 at 4:16am by Alysse*

**Algebra**

An object is fired vertically upward with an initial speed of 68.6 meters/second. After t seconds, the height is shown by y= -4.9t^2+68.6t meters. Given that this object has an initial speed of 68.6 m/s, what is the maximum height it will reach? How long did it take the rocket...
*Sunday, May 19, 2013 at 1:56pm by Sophia*

**Algebra**

An object is fired vertically upward with an initial speed of 68.6 meters/second. After t seconds, the height is shown by y = -4.9 t^2 + 68.6 t meters. Given that this object has an initial speed of 68.6 m/s, what is the maximum height it will reach? How long did it take the ...
*Monday, May 20, 2013 at 2:07am by Amy*

**Algebra**

An object is fired vertically upward with an initial speed of 68.6 meters/second. After t seconds, the height is shown by y = -4.9 t^2 + 68.6 t meters. Given that this object has an initial speed of 68.6 m/s, what is the maximum height it will reach? How long did it take the ...
*Monday, May 20, 2013 at 7:05am by Amy*

**Algebra**

An object is fired vertically upward with an initial speed of 68.6 meters/second. After t seconds, the height is shown by y = -4.9 t^2 + 68.6 t meters. Given that this object has an initial speed of 68.6 m/s, what is the maximum height it will reach? How long did it take the ...
*Thursday, May 23, 2013 at 12:56pm by Amy*

**Physics**

A student throws a ball vertically upward such that it travels 9.0 m to its maximum height. If the ball is caught at the initial height 2.4s after being thrown, what is the ball's average speed? I know average speed is change in distance over change in time, but I don't know ...
*Wednesday, November 28, 2007 at 9:23pm by Jacob*

**Algebra**

I am reposting to correct a mistake. I forgot to add a decimal point. An object is fired vertically upward with an initial speed of 68.6 meters/second. After t seconds, the height is shown by y = -4.9 t^2 + 68.6 t meters. Given that this object has an initial speed of 68.6 m/s...
*Sunday, May 19, 2013 at 9:56pm by Amy*

**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**

A rock is thrown vertically upward from the ground with an initial speed 15m/s. a. how high does go? b. how much time is required for the rock to reach its maximum height? c. what is the rock's height at t=2.00s?
*Monday, September 12, 2011 at 7:10pm by mehari*

**physics**

A rock is thrown vertically upward from the ground with an initial speed 15m/s. a. how high does go? b. how much time is required for the rock to reach its maximum height? c. what is the rock's height at t=2.00s?
*Monday, September 12, 2011 at 7:15pm by mehari*

**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 package is thrown downward with an initial velocity of -...
*Sunday, April 29, 2012 at 1:07am by Kelsey*

**Physics**

A stone is thrown from the edge of a cliff into the ocean below. It is thrown somewhat upward, but mostly outward. The stone has a mass of 2.0kg and is thrown with a speed of 10m/s from an initial height of 5.0m above the ocean. A. What is the kinetic energy of the stone when ...
*Monday, April 1, 2013 at 4:57pm by Jay*

**Physics**

A stone is thrown from the edge of a cliff into the ocean below. It is thrown somewhat upward, but mostly outward. The stone has a mass of 2.0kg and is thrown with a speed of 10m/s from an initial height of 5.0m above the ocean. A. What is the kinetic energy of the stone when ...
*Monday, April 1, 2013 at 6:41pm by Jay*

**physics**

a teniss ball thrown vertically upward reaches a maximun height of 33 meters above the surface of earth. at its maximun height the speed of he tennis ball is
*Tuesday, October 16, 2012 at 7:00pm by delilah*

**physics**

c) A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the base of the cliff the rock has the speed of 29 m/s. Assuming that the air resistance can be ignored, find i. the initial speed of the rock (5 marks) ii. the ...
*Thursday, September 6, 2012 at 12:02pm by charley*

**math**

an object is thrown upward from the top of a 80-foot building with a initial velocity of 65 feet per second. The height h of the object after t seconds is given by the equation h=-16t2+64t+80. when will the object hit the ground
*Friday, October 12, 2012 at 11:21pm by Anonymous*

**physics**

Think about it. In 2 seconds, the first object, traveling at 28m/s, is 56m high Once the second object is thrown up at the speed of 32m/s, it will close in on the first object at the net speed of 32 - 28 = 4m/s. You can now determine the time it takes for the second object to ...
*Wednesday, September 28, 2011 at 11:06pm by tchrwill*

**physics**

If an object is thrown in an upward direction from the top of a building 160 ft. high at an initial speed of 21.82 mi/h., what is its final speed when it hits the ground?(Disregard wind resistance. Round answer according to significant figures and do not reflect negative ...
*Tuesday, January 1, 2013 at 6:33pm by Anonymous*

**Physics**

A stone is thrown up vertically from the ground (the gravitational acceleration is g = 10 m/s^2 ). After a time dt =1 s, a second stone is thrown up vertically. The first stone has an initial speed v1 = 11.0 m/s, and the second stone v2 = 16.0 m/s. (a) At what time after the ...
*Sunday, October 6, 2013 at 8:16am by Anonymous*

**physics**

A 50.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 27.0 m/s. If the player was moving upward with a speed of 2.80 m/s just before impact. (a) What will be the speed of the ball immediately after the ...
*Tuesday, October 23, 2012 at 12:02am by Anonymous*

**physics**

A 50.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 27.0 m/s. If the player was moving upward with a speed of 2.80 m/s just before impact. (a) What will be the speed of the ball immediately after the ...
*Tuesday, October 23, 2012 at 12:02am 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-HELPP**

A 50.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 27.0 m/s. If the player was moving upward with a speed of 2.80 m/s just before impact. (a) What will be the speed of the ball immediately after the ...
*Tuesday, October 23, 2012 at 12:02am by Anonymous*

**physics**

A ball is thrown vertically upward at 14.7 m/s. Show that its maximum height will be 11m.
*Saturday, February 12, 2011 at 5:23pm by Daisha*

**PHYSICS**

A 0.26kg- rock is thrown vertically upward from the top of a cliff that is 32m high. When it hits the ground at the base of the cliff, the rock has a speed of 29m/s. 1) Assuming that air resistance can be ignored, find the initial speed of the rock ? m/s 2) Find the greatest ...
*Monday, October 15, 2012 at 8:07pm by RoCu*

**physics**

A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 32 m high. When it hits the ground at the base of the cliff the rock has a speed of 28 m/s. (a) Assuming that air resistance can be ignored, find the initial speed of the rock. (b) Find the greatest ...
*Thursday, November 29, 2012 at 8:31pm by jorge*

**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*

**physics..help PLEASE!**

A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 35 m high. When it hits the ground at the base of the cliff the rock has a speed of 28 m/s. (a) Assuming that air resistance can be ignored, find the initial speed of the rock. (b) Find the greatest ...
*Wednesday, October 8, 2008 at 12:42am by kelsey*

**physics**

A rock is thrown vertically upward from the edge of a cliff. The rock reaches a maximum height of 20.6 m above the top of the cliff before falling to the base of the cliff, landing 6.44 s after it was thrown. How high is the cliff?
*Saturday, September 8, 2012 at 7:03pm by Gary*

**physics**

A rock is thrown vertically upward from the edge of a cliff. The rock reaches a maximum height of 20.6 m above the top of the cliff before falling to the base of the cliff, landing 6.54 s after it was thrown. How high is the cliff?
*Friday, February 1, 2013 at 8:10pm by Anonymous*

**Physics**

A brick is thrown vertically upward with an initial speed of 3.00 m/s from the roof of a building. If the building is 78.4 m tall, how much time passes before the brick lands on the ground? I think I may have gotten part of this question by first calculating how long it takes ...
*Sunday, February 13, 2011 at 11:43pm by Julia*

**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**

An arrow is short vertically upward with an initial speed of 25m/s. When it's exactly halfway to the top of its flight, a second arrow is launched vertically upward from the same spot. The second arrow reaches the first arrow just as the first arrow reaches its highest arrow. ...
*Friday, February 18, 2011 at 1:29pm by Mary*

**physica**

a stone is thrown vertically upward with an initial velocity v0. the distance travelled by it in time 1.5v0/g?
*Wednesday, May 25, 2011 at 11:38am by pavatharani*

**physics**

a stone is thrown vertically upward with an initial velocity v0. the distance travelled by it in time 1.5v0/g
*Sunday, June 12, 2011 at 11:30am by pavatharani*

**physics**

A ball is thrown vertically upward with a velocity of 100m/s.It will reach the ground after hw many sec?
*Saturday, June 25, 2011 at 10:39am by aleeza*

**physics**

two objects are thrown from the top edge of a cliff with a speed of 10 m/s. one object is thrown straight down and the other straight up. if the first object hits the ground in 4.0 second, the second hits the ground in ________ seconds after the first object.
*Thursday, August 9, 2012 at 7:24pm by bob*

**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 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*

**calculus**

The speed is zero when the derivative of h with respect to t is zero. dh/dt = -32t + 13 = 0 Solve that for t, and use the t that you get in the equation for h. t = 13/32 = 0.4063 seconds @ maximum h h(@ t = .4063) = ___? The problem corresponds to an object thrown upward at a ...
*Tuesday, September 14, 2010 at 4:12pm by drwls*

**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*

**Physics**

A baseball is seen to pass upward by a window 24 m above the street with a vertical speed of 8 m/s. The ball was thrown from the street. (a) What was its initial speed? (b) What altitude does it reach? (c) How long after it was thrown did it pass the window?
*Sunday, October 24, 2010 at 3:00am by Jen*

**Physics **

**I JUST NEED THE STEPS ON HOW TO SOLVE THE PROBLEMS** An object experiences an acceleration of 6.8m/s^2. As a result, it accelerates from rest to 24m/s. How much distance did it travel during that acceleration? A car which is traveling at a velocity of 15m/s undergoes an ...
*Thursday, November 8, 2012 at 7:15pm by Elyssa*

**science**

The building height doesn't matter. On its way down, as the thrown object passes the roof, its speed will again be 8 m/s, but DOWN. Since the object was thrown, the elapsed time is then (2*Vo)/g = 1.663 s. It will spend the remaining t' = 4 - 1.663 = 2.406 seconds falling to ...
*Thursday, January 31, 2013 at 9:34pm by drwls*

**Physics**

A 55-kg soccer player jumps vertically upwards and heads the 0.45-kg ball as it is descending vertically with a speed of 30 m/s. (a) If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of the ball immediately after the collision ...
*Monday, October 7, 2013 at 10:18am by Anonymous*

**Physics**

A rock is thrown vertically upward with a speed of 11.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. In how many seconds after being thrown does the rock strike the ground? GOT THIS!!!! t=5.07s What is the speed of the rock just before it ...
*Monday, September 11, 2006 at 11:40pm by Josh*

**Physics- PLEASE HELP**

A 58.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with(b) If the ball is in contact with the players head for 19 ms, what is the average acceleration of the ball? a speed of 26.0 m/s. If the player was moving upward with...
*Wednesday, October 17, 2012 at 11:43am by Anonymous*

**Physics- PLEASE HELP**

A 58.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with(b) If the ball is in contact with the players head for 19 ms, what is the average acceleration of the ball? a speed of 26.0 m/s. If the player was moving upward with...
*Wednesday, October 17, 2012 at 3:43pm by Megan*

**Physics**

A baseball is thrown vertically upward with an initial velocity of 20m/s. The maximum height gained by the ball is? I do not understand this problem!
*Sunday, September 27, 2009 at 1:26pm by Jake*

**physics**

a stone is thrown vertically upward with an initial velocity v0. the distance travelled by it in time 1.5v0/g
*Monday, June 13, 2011 at 9:31pm by Rohit Rao singrauli*

**physics**

A stone with mass m = 2.3 kg is thrown vertically upward into the air with an initial kinetic energy of 190 J. The drag force acting on the stone throughout its flight is constant, independent of the velocity of the stone, and has a magnitude of 2.3 N. What is the maximum ...
*Wednesday, February 22, 2012 at 2:00pm by Katie*

**physics**

A stone is thrown upward with a speed of 20 m/s. It is caught on its way down at a point 5.0 m above where it is thrown. A) How fast was it going when it was caught? B) how long did the trip take?
*Wednesday, December 12, 2012 at 8:30pm by Aaron*

**Physics**

<A ball is thrown vertically upward. What are its velocity and acceleration when it reaches its maximum altitude? At the maximum altitude the ball stops so what are its (instanteous) velocity and acceleration? What is its acceleration just before it hits the ground? > ...
*Wednesday, November 10, 2010 at 7:24am by Dr Russ*

**physics**

A ball is thrown vertically upward with a speed of 23.7 m/s from a height of 2.0 m. How long does it take to reach its high- est point? The acceleration of gravity is 9.81 m/s2 2) How long does the ball take to hit the ground after it reaches its highest point?
*Friday, November 12, 2010 at 9:36pm by stan*

**Physics**

A research balloon of total mass 445 kg is descending vertically with a downward acceleration of 1.3 m/s2. How much ballast must be thrown from the car to give the balloon an upward acceleration equal to 1.5 m/s2, presuming that the upward lift of the balloon does not change.
*Monday, September 28, 2009 at 8:03pm by Brandon*

**Physics**

A research balloon of total mass 225 kg is descending vertically with a downward acceleration of 1.4 m/s2. How much ballast must be thrown from the car to give the balloon an upward acceleration equal to 3.6 m/s2, presuming that the upward lift of the balloon does not change.
*Thursday, October 24, 2013 at 9:55pm by Liz*

**physics**

if a ball is thrown vertically upward and is caught 5 seconds,how fast must have been going when it left the person s hand?help
*Friday, January 14, 2011 at 3:18pm by Joel*

**Algebra**

If an object is thrown upward with an initial velocity of 96 feet/sec, it's height after t sec is given by h=96t-16t^2. Find the number of seconds before the object hits the ground.
*Friday, July 30, 2010 at 10:03pm by Sharon*

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