Friday

July 25, 2014

July 25, 2014

Number of results: 15,940

**physics**

A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep. What is the rock's velocity as it hits the bottom of the hole?
*October 6, 2008 by Vishnu*

**Physics**

A rock is tossed straight up with a velocity of 32.1 m/s. When it returns, it falls into a hole 20.1 m deep. What is the rock's velocity as it hits the bottom of the hole?
*October 4, 2010 by Bala*

**Physics**

A rock is tossed straight up with a velocity of 33.9 m/s. When it returns, it falls into a hole 11.9 m deep. What is the rock's velocity as it hits the bottom of the hole?
*October 4, 2010 by Em*

**Phyiscs**

A rock is tossed straight up with a velocity of 33.9 m/s. When it returns, it falls into a hole 11.9 m deep. What is the rock's velocity as it hits the bottom of the hole?
*October 4, 2010 by Em*

**Physics**

A rock is tossed straight up with a velocity of 33.9 m/s. When it returns, it falls into a hole 11.9 m deep. What is the rock's velocity as it hits the bottom of the hole?
*October 4, 2010 by Em*

**physics**

A rock is tossed straight up with a velocity of 34.0 m/s. When it returns, it falls into a hole 17.3 m deep. What is the rock's velocity as it hits the bottom of the hole? How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
*October 8, 2010 by Andres*

**Math-Help**

A rock is tossed straight up into the air. The height h (in feet) t seconds after it is tossed is given by the function: h(t)=-16t^2+100.4t+5.1 (a) Make a table of values for 0 to 10 seconds. (b) Graph the function. (c) What is the initial height of the rock? (d) When did the ...
*April 28, 2014 by Kevin*

**physics**

A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep. What is the rock's velocity as it hits the bottom of the hole? Responses The gain in kinetic energy equals the loss of potential energy. (1/2) M (V2^ - V1^2) = M g *(18...
*October 8, 2008 by Vishnu*

**physics**

A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep. How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
*October 7, 2008 by Deepa*

**physics**

A rock is tossed straight up with a speed of 29m/s. When it returns, it falls into a hole 13m deep. Solve for rock's velocity as it hits the bottom of the hole. &How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?
*June 12, 2012 by Amanda*

**University Physics**

A rock is tossed straight up with an initial speed of 20 m/s. When it returns, it fall into a hole that is 8.0 m deep. What is the velocity of the rock (in m/s) when it hits the bottom of the hole? Use -9.80 m/s2 for the local acceleration due to gravity and assume no ...
*September 12, 2011 by Me*

**phisics**

a rock is tossed straight up with a speed of 30m/s. when it returns it falls into a hole 10m deep. what is the rocks velocity as it hits the bottom of the whole? how long would the rock in the air, form the instant it is released until it hits the bottom on the hole
*August 30, 2012 by nicolas*

**physics**

The acceleration due to the moon's gravity at its surface is less than what it is here on the surface of the earth. The computed value of 1.6 m/s2 is consistent with what the Apollo Program astronauts observed during their explorations there. Imagine an astronaut holding a ...
*October 2, 2013 by becca*

**Physics**

A dynamite blast sends a piece of rock (shatter) straight upwards. After 2.31x10^0 s the piece of rock has a velocity of 1.56x10^1 m/s. Assuming there is no air resistance, what is the initial velocity of the rock, to two significant figures?
*October 14, 2010 by peter*

**Calculus**

A blast blows a rock straight up at 150 ft/sec. The path of the rock is described by the s(t) = 150t-16t^2 where s is measured in feet and t in seconds. Find the velocity of the rock when it is 200 ft above the ground and when the rock hits the ground.
*February 18, 2012 by Desperate!!!!*

**physics**

A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep. What is the rock's velocity as it hits the bottom of the hole? Responses The gain in kinetic energy equals the loss of potential energy. (1/2) M (V2^ - V1^2) = M g *(18...
*October 8, 2008 by Vishnu*

**Physics **

A rock is thrown into a railroad car standing on a level frictionless track. If the rock has a mass of ms = 1.100 kg and is tossed with a velocity v = 6.3 m/s, how far up will the car go (mc = 5.400 kg) before stopping? Please explain
*January 4, 2014 by Harriet*

**physics**

Brad tosses a rock straight up at 38.4 m/s. What is the rock's velocity after 2.0 seconds?
*October 21, 2011 by Jinnie*

**Physics**

a rock is thrown straight up which of the following statemetns concerning the net force acting on the rock at teh top of the path is true? assume air resistance is negligible. a)it's equal to the weight of the rock b) it is instantanwously equal to zero c) it's direction ...
*November 14, 2007 by Andrea*

**physics**

A catapult gives a rock a vertical velocity of 122m/s. a. Determine the time the rock is in the air. b. Determine the maximum height the rock would reach. c. As the rock leaves the catapult the rock also has a horizontal velocity of 34m/s. solve for the rocks range. d. Solve ...
*November 19, 2012 by Sadie*

**pre-cal **

aj uses a lingshot to launch a rock straight up from the a point of 6 ft. above ground level with an initial velocity of 170 ft per second. A) find an equation that models the height of the rock t seconds after it is launched. b) what is the maximum height of the rock and when...
*October 24, 2012 by jhon avendano*

**Calc**

If a rock is thrown upward on the planet Mars with a velocity of 17 m/s, its height (in meters) after t seconds is given by H = 17t − 1.86t^2. (a) Find the velocity of the rock after one second. (b) Find the velocity of the rock when t = a. (c) When will the rock hit the...
*October 17, 2011 by Katrina*

**Physics**

Using energy considerations and neglecting air resistance, calculate how far a rock will rise above its point of release if it is tossed straight up with an initial speed of 10m/sec. Using energy considerations and neglecting air resistance, calculate how far a rock will rise ...
*January 29, 2011 by Anonymous*

**physics**

Frank stands at the base of a building. He throws a 0.12kg rock straight up at a speed of 28m/s so that it rises to a maximum height of 12m above the top of the building and then falls straight down on the roof of the building. a) What is the height of the building? b) What is...
*April 18, 2010 by bob*

**Physics Gr.11**

Frank stands at the base of a building. He throws a 0.12kg rock straight up at a speed of 28m/s so that it rises to a maximum height of 12m above the top of the building and then falls straight down on the roof of the building. a) What is the height of the building? b) What is...
*April 18, 2010 by NINI*

**physics**

A rock is dropped from a treetop 19.6 m high, and then, 1.00 s later, a second rock is thrown down. With what initial velocity must the second rock be thrown if it is to reach the ground at the same time as the first? I'm not sure how to find the initial velocity of the thrown...
*February 10, 2013 by Wes*

**physical science**

A rock thrown straight up climbs for 4.24 s, then falls to the ground. Neglecting air resistance, with what velocity did the rock strike the ground?
*January 30, 2014 by Coya*

**Physical Science**

A rock thrown straight up climbs for 2.50 s,the falls to the ground. Neglecting the air resistance, with wat velocity did the rock strike the ground?
*March 6, 2010 by Julie*

**Math**

Jim Handy finds an irregularly shaped five-sided rock. He labels each side and toss the rock 100 times. The results of his tosses are shown in the table. Determine the empirical probability that rock will land on side 4 if tossed again. Side 1 2 3 4 5 Frequency 32 18 15 13 22
*January 8, 2013 by Arleen*

**Ýndustrial Engineering**

The figure shows the paths of a golf ball your friend drops from the window of her apartment and of the rock you throw from the ground at the same instant. The rock and the ball collide at x = 41.00 m, y = 17.02 m, and t = 2.94 s. If the ball was dropped from a height of h = ...
*March 18, 2013 by Ozgun*

**Physics **

A rock thrown straight up with a velocity of 29 m/s from the edge of a building just misses the building as it comes down. The rock is moving at 44 m/s when it strikes the ground. How tall was the building? The acceleration of gravity is 9.8 m/s Answer in units of m
*September 3, 2012 by Diane*

**AP Physics**

A rock thrown straight up with a velocity of 30 m/s from the edge of a building just misses the building as it comes down. The rock is moving at 47 m/s when it strikes the ground. How tall was the building? The accelera- tion of gravity is 9.8 m/s2 . Answer in units of m.
*August 24, 2010 by Alex*

**math**

Your friend is standing below the window outside of our classroom and attempting to throw a rock past the window to get your attention. The rock is thrown straight up in the air and passes our window 0.40s after being released. It passes the same window on its way back down 1....
*February 21, 2014 by gabriela*

**Physics**

A rock is thrown vertically from the edge of a cliff that is 500 ft high. It takes 6.5 seconds for the rock to hit the ground at the base of the cliff. Assume air resistance is negligible. (a) What was the initial velocity (magnitude and direction) of the rock? (b) What was ...
*September 21, 2012 by josephz*

**Physics**

A hiker throws a rock with a mass of 1.4kg from a cliff that is 37 m above the ground . The hiker gives the rock an initial downward velocity of 8.5 m/s. a) What is the energy of the rock at the moment the hiker releases it? b) What is the velocity of the rock at the moment it...
*May 4, 2014 by cee*

**ALGEBRA**

The velocity v (in feet per second) of a rock dropped into a well is related to time (in seconds) by the formula v = 32t. What is the velocity of the rock at the indicated instant? Write your answer in the form (t, v). (a) when the rock is released ( , ) (b) after 9 seconds
*April 25, 2012 by Randy*

**physics **

Julie throws a rock vertically upward. From a height of 64.0 meters above thehow ground. The initial velocity of the rock is 31.0 meters per second neglect air resistance How long does it take for the rock to hit the ground? What is the velocity of the rock just before it hit ...
*April 1, 2013 by kieshà*

**Calculus Help Please!!! Check **

If a rock is propelled upward from the surface of Mars at a velocity of 93 m/sec, it reaches a height s = 93t – 1.86t^2 after t sec. a. Find the rock’s velocity and acceleration at time t. v'(t)=93-3.72t a''(t)=-3.73 b. How long does it take the rock to reach its highest point...
*April 8, 2014 by Tenshi*

**Calculus Help Please!!! Check **

If a rock is propelled upward from the surface of Mars at a velocity of 93 m/sec, it reaches a height s = 93t – 1.86t^2 after t sec. a. Find the rock’s velocity and acceleration at time t. v'(t)=93-3.72t a''(t)=-3.73 b. How long does it take the rock to reach its highest point...
*April 8, 2014 by Tenshi*

**physics**

a rock was thrown at the height of 50.0 m above the ground with an initial velocity of 20.0 m/s straight upward.
*October 4, 2011 by hd*

**Physics**

A rock is dropped of the side of a bridge and hits the water below 4s later. a. What was the rock’s velocity when it hit the water? b. What was the rock’s average velocity as it fell? c. What is the height of the bridge above the water?
*April 6, 2010 by Jackie*

**Physics**

. A rock is thrown up into the air with an initial velocity of 15m/s up. What is the rock's velocity after 0.40 seconds?
*June 8, 2014 by Bob*

**math **

a rock is thrown straight up in the air from an initial height of ho, in metres, with the initial velocity vo, in metres per second. The height in metres above the ground after t seconds is given by h(t) = -4.9t^2 + vo + ho. Find an expression for the time it takes the rock to...
*November 29, 2013 by Kp*

**physics**

A man fires a rock of a slingshot directly upward.The rock has an initial velocity of 15m/s.How long will it take for the rock to return to the level he fired it at?
*April 4, 2013 by Shazz*

**Calculus**

well i have this homework question that says: A rock is dropped from the top of a 300-ft cliff. It's velocity at time t seconds is v(t0= -32 t feet per second. a.) Find the height of the rock above the ground at time t. b.) How long will the rock take to reach the ground? c.) ...
*May 11, 2009 by Caitlin*

**College Physics**

Consider a rock thrown off a bridge of height 78.5 m at an angle è = 25° with respect to the horizontal as shown in Figure P4.20. The initial speed of the rock is 15.6 m/s. Find the following quantities: (a) the maximum height reached by the rock (b) the time it takes the rock...
*September 12, 2011 by HELP*

**physics**

a man stands on the roof of a building that is 30m tall and throws a rock with a velocity of magnitude of 40m/s at an angle of 33 degress a bove the horizontal. Calculate the following: a.) The maximum height above the roof reached by the rock. b.) The magnitude of the ...
*February 7, 2013 by jm*

**Physics**

You shoot a rock with a wrist-rocket straight up, it takes 6 seconds for it to come back down (IGNORE THE HEIGHT YOU SHOT IT FROM.) How high did the rock go? what was the rock's speed initially going up (V1)? How fast is it traveling when it hits the ground on the way down?
*October 21, 2011 by Dakota*

**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 ...
*April 28, 2013 by ayana*

**physics**

An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of + 15.5 m/s and measures a time of 13.9 s before the rock returns to his hand. What is the acceleration (magnitude and direction) due...
*June 17, 2013 by louis aaaa*

**physics**

An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of 13.5 m/s and measures a time of 21.8 s before the rock returns to his hand. What is the acceleration due to gravity on this planet? (...
*January 15, 2012 by Jen*

**Physics **

An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of + 14.2 m/s and measures a time of 22.2 s before the rock returns to his hand. What is the acceleration (magnitude and direction) due ...
*September 6, 2012 by Meghan*

**physics**

Consider a rock that is thrown off a bridge of height 27 m at an angle θ = 24° with respect to the horizontal as shown in the figure above. If the initial speed the rock is thrown is 12 m/s, find the following quantities: (a) The time it takes the rock to reach its ...
*September 6, 2010 by frank*

**Physics**

An attacker at the base of a castle wall 3.82 m high throws a rock straight up with speed 7.10 m/s from a height of 1.45 m above the ground. (a) Will the rock reach the top of the wall? __yes __no (b) If so, what is its speed at the top? If not, what initial speed must it have...
*September 8, 2012 by Emily*

**Physics 1**

A rock is thrown straight upward with an initial velocity of 9.6 m/s in a location where the acceleration due to gravity has a magnitude of 9.81 m/s2. To what height does it rise? Help meh please.
*September 29, 2010 by Aisumi*

**Physics**

acceleration due to gravity questions A rock is dropped from a height of 7meters a) what is the average velocity of the rock during its fall b) how long does it take the rock to fall
*February 25, 2010 by jake*

**phys**

A rock stuck in the tread of a 56.0--diameter bicycle wheel has a tangential speed of 3.10 . When the brakes are applied, the rock's tangential deceleration is 1.30m/s2 What is the magnitudes of the rock's angular velocity at = 1.70 ?
*May 28, 2012 by keren*

**Physics**

A slingshot is pulled back 55cm down to the ground with a rock in its pouch. The slingshot has a spring constant of 862N/m. The mass of the rock is 700g. What height is the rock when its velocity is 12m/s?
*December 2, 2012 by Snoop*

**Physics**

A man throws a rock of mass m = 0.310 kg straight up into the air. In this process, his arm does a total amount of work Wnet = 105 J on the rock. Calculate the maximum distance, h, above the man's throwing hand that the rock will travel. Neglect air resistance.
*May 27, 2012 by James*

**physics**

You and two friends are on top of the library 30 m above the ground. At the same time that you drop a ball, from rest, one of your friends tosses a ball straight up, giving it an initial velocity of 15 m/s, and your other friend tosses a ball straight down, giving it an ...
*September 27, 2010 by Sam*

**Physics**

A man stands on the roof of a building that is 50 m tall and throws a rock with a velocity of 35 m/s at an angle of 50 degrees above the horizontal (a) What is the total time in the air (b) What is the horizontal distance from the base of the building to the point where the ...
*December 18, 2013 by Vlad*

**Physics**

A man stands on the roof of a building that is 50 m tall and throws a rock with a velocity of 35 m/s at an angle of 50 degrees above the horizontal (a) What is the total time in the air (b) What is the horizontal distance from the base of the building to the point where the ...
*December 18, 2013 by Vlad*

**physics**

A rock is thrown from the roof of a building with a velocity v at an angle of alpha from the horizontal. The building has height h. You can ignore air resistance. Calculate the magnitude of the velocity of the rock just before it strikes the ground
*September 10, 2010 by ami*

**physics**

One day I decide I want to see how high I can throw a rock. I throw a rock straight up in the air and it has a speed of 30 m/s when it leaves my hand. I then realize this was foolish, as I need to get out of the way before the rock comes back down and hits me on the head. How ...
*May 17, 2013 by HELP!!*

**Earth Science**

1. In the classroom during a visual inspection of a rock, a student recorded four statements about the rock. Which statement about the rock is an observation? (1)The rock formed deep in Earthâ€™s interior. (2)The rock cooled very rapidly. (3)The rock dates from the Cambrian ...
*June 18, 2008 by Anonymous*

**physics**

An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of +13 m/s and measures a time of 20.5 s before the rock returns to his hand. What is the acceleration (magnitude and direction) due to ...
*July 4, 2010 by Dave*

**Physics**

Two rocks are thrown off the edge of a cliff that is 15.0 m above the ground. The first rock is thrown upward, at a velocity of +12.0 m/s. The second is thrown downward, at a velocity of −12.0 m/s. Ignore air resistance. Determine (a) how long it takes the first rock to ...
*September 12, 2010 by Sandy*

**physics**

A man stands on the roof of a 10.0 -tall building and throws a rock with a velocity of magnitude 24.0 at an angle of 42.0 above the horizontal. You can ignore air resistance. Calculate the magnitude of the velocity of the rock just before it strikes the ground.
*February 2, 2008 by Ava*

**physics**

A man stands on the roof of a 19.0 m-tall building and throws a rock with a velocity of magnitude 30.0 m/sat an angle of 42.0 degrees above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock. Calculate the magnitude ...
*September 14, 2009 by lina*

**Physics**

A rock is thrown straight upward with an initial velocity of 9.6 m/s in a location where the acceleration due to gravity ahs a magnitude of 9.81 m/s^2. To what height does it rise? please walk me through this problem:)
*February 7, 2009 by y912f*

**physics**

A rock is thrown straight upward with an initial velocity of 9.6 m/s in a location where the acceleration due to gravity has a magnitude of 9.81 m/s^2. To what height does it rise? i got 4.7 can you please show me how to solve for this last one
*February 17, 2009 by y912f*

**PHYSICS- Please Help :(**

A ball is thrown downwards at a velocity of 14m/s from a bridge. One second earlier a rock is dropped from the same bridge. a)When will the ball meet up with the rock. b)When will the ball meet up with the rock? c)What is the initial minimum speed by the ball in order to catch...
*February 12, 2012 by Coco*

**Calculus**

a grapefruit is tossed straight up with an initial velocity of 50 ft/sec. the grapefruit is 5ft above ground when released. how high does it go before returning to the ground equation? Equation of height in terms of time y= -16t^2+50t+5
*March 8, 2013 by Alc*

**Calculus**

The acceleration due to gravity near the surface of Mars is 3.72ms^-2 . A rock is thrown straight up from the surface with an initial velocity of 23ms^-2 . How high does it go?
*May 13, 2013 by Grant*

**Physics**

I threw a rock straight up with a speed of 20 m/s. I happened to be standing over a well when I threw it, so when instead of landing on the ground, it falls into the well. The surface of the water in the well is 5 meters below point when the rock left my hand. How long is it ...
*February 14, 2014 by Joy*

**earth**

#40 which type of rock is a result of a rock changing by heat and pressure? a. metamorphic rock b. igneous rock c. sedimentary rock d. metal ores
*January 13, 2013 by ?*

** Algebra**

Height difference. A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height t seconds after it is tossed is -16t2 + 96t feet. The green ball is given an initial velocity of 80 feet per ...
*February 27, 2009 by Debbie*

**algebra**

Height difference. A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height t seconds after it is tossed is 16t2 96t feet. The green ball is given an initial velocity of 80 feet per ...
*July 23, 2010 by joyce*

**physics**

a rock is thrown vertically down from a bridge with an initial velocity of 30m/s and strikes the water in 2.0sec. find the velocity with which the rock strikes and the height of the bridge.
*June 20, 2014 by roger*

**physics**

A child wants to throw a rock into a puddle which is 20m away and 20m down a hill. If he can throw the rock at ana ngle of 60, what velocity does he need to release the rock at?
*November 17, 2010 by kristen*

**physics**

One side of the roof of a building slopes up at 30.5°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. The rock slides straight up the incline with an initial speed of 15.0 m/s. The coefficient of kinetic friction between the rock ...
*September 16, 2013 by Anonymous*

**physics**

One side of the roof of a building slopes up at 30.5°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. The rock slides straight up the incline with an initial speed of 15.0 m/s. The coefficient of kinetic friction between the rock ...
*September 16, 2013 by Anonymous*

**physics**

One side of the roof of a building slopes up at 30.5°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. The rock slides straight up the incline with an initial speed of 15.0 m/s. The coefficient of kinetic friction between the rock ...
*September 16, 2013 by Anonymous*

**chem, help please**

A 0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. The velocity of the rock is 4.50 m/s. What is the centripetal force acting on the rock? how do i find centripetal force??
*November 19, 2010 by Jon*

**physics**

A balloon carrying a basket is descending at a constant velocity of 20.0 m/s. A person in the basket throws a stone with an initial velocity of 15.0 m/s horizontally perpendicular to the path of the descending balloon, and 4.00s later this person sees the rock strike the ...
*February 9, 2008 by Erin*

**science**

A man stands on the roof of a building of height 15.8m and throws a rock with a velocity of magnitude 25.2m/s at an angle of 32.7∘ above the horizontal. You can ignore air resistance. Part A Calculate the maximum height above the roof reached by the rock. y = 9....
*March 2, 2014 by sanele*

**Pre-Ap Physics**

A rock is projected from the edge of the top of a building with an initial velocity of 16.3 m/s at an angle of 39 ◦ above the horizontal. The rock strikes the ground a horizontal distance of 90 m from the base of the building. The acceleration of gravity is 9.8 m/s 2. ...
*September 24, 2012 by Maria*

**calculus help**

At time t=0, an astronaut stands on a platform 3 meters above the moon's surface and throws a rock directly upward with an initial velocity of 32 m/sec. if the acceleration due to gravity is 1.6 m/sec^2. a) find the equations of motion for the throwing of this rock. -1. a(t)=-...
*April 25, 2014 by Anonymous*

**Physics**

Example 1: (Rock A) is thrown against a larger stationary rock(Rock B). considering the following possibilities... 1. Rock A bounces off of Rock B 2. Rock A splits into two pieces off of Rock B 3. Rock A explodes into many pieces off of Rock B What factors are affecting the ...
*November 8, 2013 by Cole*

**science**

A rock tumbles straight down from a cliff, its moving at 20 m/s when it hits. What is the height of the cliff? The mass of the rock is 8 kg. a) 2.5 m b) 400 m C) 20.4 m d) 160 m
*May 23, 2014 by katie*

**Physics**

A rock is projected from the edge of the top of a building with an initial velocity of 19.6 m/s at an angle of 31 degrees above the horizontal. The rock strikes the ground a horizontal distance of 77 m from the base of the building. The acceleration of gravity is 9.8 m/s^2.(...
*November 1, 2011 by Julia*

**physics**

An astronaut on Neptune drops a rock straight downward from a height of 0.95 m. If the acceleration of gravity on Neptune is 11.2 m/s2, what is the speed of the rock just before it lands? (m/s)
*September 16, 2010 by jack*

**Physics**

A man stands on the roof of a 19.0 m-tall building and throws a rock with a velocity of magnitude 24.0 m/s at an angle of 38.0 degrees above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock. got it.... 11.1 m ...
*September 16, 2006 by Josh*

**Earth Science**

1.Which statement made by a student after examining a rock specimen is an inference? (1)The rock is of igneous origin. (2)The rock has rounded edges. (3)The rock is light-colored. (4)The rock contains large crystals. Is it (1)?
*June 18, 2008 by Anonymous*

**physics**

a rock is dropped off a cliff. after 4s, what is the rocks velocity? how far did the rock fall?
*November 8, 2011 by kyla*

**Algebra - word problem**

A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height, t seconds after it is tossed is (-16t^2 + 96t) feet. The green ball is given an initial velocity of 80 feet per second, and its ...
*November 30, 2009 by lindy*

**PHYSICS**

A ROCK IS THROWN OFF A CLIFF WITH AN HORIZONTAL VELOCITY OF 55.0 M/SEC. IT TAKES THE ROCK 7.0 SEC TO HIT THE GROUND A)WHAT IS THE HEIGHT OF THE CLIFF B) HOW FAR FROM THE FOOT OF THE CLIFF DOES THE ROCK HIT THE GROUND C)WHAT IS THE HORIZONTAL COMPONENT OF VELOCITY WITH WHICH ...
*October 16, 2011 by HELPPPPPPP*

**PHYSÝCS**

The figure shows the paths of a golf ball your friend drops from the window of her apartment and of the rock you throw from the ground at the same instant. The rock and the ball collide at x = 34.14 m, y = 17.75 m, and t = 2.71 s. If the ball was dropped from a height of h = ...
*February 27, 2012 by please please please helpppp*

**ALGEBRA**

A golf ball is tossed straight down out of an airplane. The downward velocity of the ball at various times is given in the table below. SEC AFTER THROW DW VELOSCITY X m/s Y 1 21.8 1.6 27.68 2 31.6 2.2 33.56 What is the slope of the line that firs this data? Is it 7.8 8.8 9.8 ...
*April 25, 2011 by mary*

**PHYSÝCS**

please any one help me for this question The figure shows the paths of a golf ball your friend drops from the window of her apartment and of the rock you throw from the ground at the same instant. The rock and the ball collide at x = 34.14 m, y = 17.75 m, and t = 2.71 s. If ...
*February 27, 2012 by LARA*

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