Tuesday

February 21, 2017
Number of results: 36,224

**physics**

An object is thrown downward with an initial speed of 15 m/s from a height of 85 m above the ground. At the same instant, a second object is propelled vertically up from ground level with a speed of 29 m/s. At what height above the ground will the two objects pass each other? ...

*September 15, 2015 by Lake*

**Physics**

A rock is thrown vertically upward with a speed of 11.0 from the roof of a building that is 70.0 above the ground. Assume free fall. In how many seconds after being thrown does the rock strike the ground? What is the speed of the rock just before it strikes the ground? The ...

*September 10, 2006 by JC*

**Physics**

A small rock is thrown vertically upward with a speed of 17.0m/s from the edge of the roof of a 22.0m 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. 1. what is the speed of the rock just ...

*June 8, 2015 by Lisa*

**physics**

A ball is thrown vertically upward with a speed of 27.9 m/s from a height of 1.9 m. How long does it take to reach its high- est point? The acceleration of gravity is 9.81 m/s2. Answer in units of s

*September 28, 2011 by rc*

**Physics**

An object is thrown vertically upward at 18m/s from a window and hits the ground 1.6s later. What is the height of the window above the ground?(air resistance is negligible)

*December 29, 2012 by l*

**Physics 221**

1. throughout a time interval, while the speed of a particle increases as it moves along the x axis, its velocity and acceleration might be: A. positive and negative, respectively B. negative and positive, respectively C. negativa and negative, respectively D. negative and ...

*August 26, 2007 by Joshua*

**Physics- Equilibrium**

Which of the following is in equilibrium? a. an object that was thrown straight upward at the moment it has zero velocity (my answer) b. an object moving in a circle at constant speed c. an object that moves at constant velocity d. an object that moves at constant acceleration

*November 21, 2016 by MM*

**physics**

A stone is thrown vertically upward with a speed of 15m/s.what is the acceleration of the stone in its highest point of its motion?

*July 11, 2012 by sushma*

**Science**

A ball thrown vertically upward has a speed of 5.0 m/s at a height of 3.0m. The mass of the ball is 1.2 kg. Find its mechanical energy

*March 11, 2016 by Karl*

**Physics**

A small rock is thrown vertically upward with a speed of 13.0 m/s from the edge of the roof of a 20.0 m 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 ...

*September 10, 2011 by Walter*

**physics**

A small rock is thrown vertically upward with a speed of 13.0 from the edge of the roof of a 31.0 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 What is the speed of the rock just before it ...

*September 13, 2011 by josh*

**Physics**

A small rock is thrown vertically upward with a speed of 17.0m/s from the edge of the roof of a 32.0m 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. What is the speed of the rock just before...

*February 6, 2014 by Anonymous*

**Physics**

A small rock is thrown vertically upward with a speed of 14.0m/s from the edge of the roof of a 25.0m 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. What is the speed of the rock just before...

*September 7, 2014 by Deszlyn*

**science**

A stone is thrown vertically upward with a speed of 11.0 m/s from the edge of a cliff 80.0 m high. How much later does it reach the bottom of the cliff?

*February 28, 2011 by cory*

**Physics**

A stone is thrown vertically upward with a speed of 12.0 m/s. (a) How fast is it moving when it reaches a height of 5.0 m? (b) How long is required to reach this height?

*May 5, 2015 by Shing*

**physics**

a stone is thrown vertically upward at a speed of 10 m/s from a cliff that is 95m high. How long will it take the stone to reach the bottom?

*October 26, 2015 by Anonymous*

**college physics**

An object thrown vertically upward with initial velocity from the surface of the Earth reaches a height H before falling back toward the Earth. If initial velocity is doubled, the object reaches a maximum height equal to ________. Ignore air resistance.

*August 24, 2010 by Thomas*

**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.

*January 9, 2013 by flay*

**Physics**

A stone is thrown vertically upward with an initial speed u.if is the acceleration due to gravity,at what time will the stone return to the starting point

*April 14, 2015 by Olushola*

**Physics**

A stone is thrown vertically upward with a speed of 21.0 m/s a)How fast is it moving when it reaches a height of 15.8 m b)How much time is required to reach this height?

*October 31, 2015 by mark*

**Math**

An object is propelled vertically upward from the top of a 144-foot building. The quadratic function s(t)= -16t2+192+144 models the ball's height above the ground, in feet, s(t) seconds after it was thrown. How many seconds does it take until the object finally hits the ground...

*July 6, 2012 by Anonymous*

**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?

*September 28, 2011 by Kelsi*

**Physics**

A stone is thrown vertically upward with a speed of 18.0 m/s. (a)How fast is it moving when it reaches a height of 11.0 m? (b)How long is required to reach this height ? (c)Why are there two answers to (b)?

*August 2, 2014 by Anonymous*

**Physics**

A stone is thrown vertically upward at an initial speed of 10m/s. Find the total time of the flight and the maximum height reached by the stone.

*February 8, 2016 by Jane*

**physics**

A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 6.2 m higher than A, with speed v/2. Calculate the maximum height reached by the stone above point B.

*December 5, 2010 by anna*

**physical science**

A tennis ball is thrown vertically upward wih an initial velocity of 8.0m/s. A) What will its speed be wheen it returns to its tarting point? B) How long will it take for it to reach its starting poing?

*April 16, 2009 by Taylor*

**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...

*October 11, 2010 by hana*

**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...

*October 11, 2010 by hana*

**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...

*October 11, 2010 by hana*

**Physics**

An object is thrown upwards at an initial speed of 19.6m/s from a height of 55m. How long will it take for the object to reach the ground.(from the time it was thrown)

*August 22, 2012 by Derp*

**Scientific studies**

A stone is thrown vertically upward with a speed of (a) How fast is it moving when it reaches a height of 11.0 m? (b) How long is required to reach this height? (c) Why are there two answers to (b)?

*February 17, 2010 by Aly*

**physics**

a girl throws a stone vertically upward with an initial speed of 8 m/s. How high will the stone rise? How long will it take to return to the ground after it is thrown?

*January 18, 2012 by lori*

**Physics**

a ball is thrown vertically upward and reaches a height of 15 cm. Find, a.) The projection velocity b.) the time of flight c.) the speed with w/c the ball passes the starting point

*August 26, 2015 by Justine*

**physics**

An apple (0.100 kg) is thrown vertically upward at a speed of [let x = any whole number between 10 and 20] m/s (from an arm 1.5 m off of the ground). What is the maximum height that the apple reaches? (g=9.8 m/s2)

*November 11, 2015 by devon*

**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 ...

*September 11, 2006 by Josh*

**physics**

1.A motorist drive along a straight road at a constant speed of 15.0 m/s.Just as she passes a parked motorcycle police officer,the officer starts to accelerate at 2.0 m/s^2 to overtake her. Assuming the officer maintains this acceleration, a) determine the time it takes the ...

*September 9, 2014 by Anonymous*

**physics**

1.A motorist drive along a straight road at a constant speed of 15.0 m/s.Just as she passes a parked motorcycle police officer,the officer starts to accelerate at 2.0 m/s^2 to overtake her. Assuming the officer maintains this acceleration, a) determine the time it takes the ...

*September 9, 2014 by Anonymous*

**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?

*July 30, 2012 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?

*July 30, 2012 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?

*March 30, 2010 by jake*

**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:(

*April 7, 2009 by julie*

**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?

*May 9, 2013 by Sibula*

**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?

*July 22, 2013 by Seetharaman*

**math**

An object is thrown vertically so that its height in feet above the ground x seconds after it is thrown can be found using the following quadratic function f(x)=-16x^2+64x+80

*February 9, 2015 by joe*

**physics**

4. Brick A is hurled vertically upward from a bridge at an initial speed of 4.90 m/s. One second later, Brick B is thrown horizontally from the same bridge with an initial speed of 9.80 m/s. Which hits the water first?

*October 14, 2011 by Elijah*

**physics**

4. Brick A is hurled vertically upward from a bridge at an initial speed of 4.90 m/s. One second later, Brick B is thrown horizontally from the same bridge with an initial speed of 9.80 m/s. Which hits the water first?

*October 14, 2011 by Elijah*

**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 -...

*April 29, 2012 by Kelsey*

**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?

*March 7, 2011 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?

*March 7, 2011 by Nicola*

**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?

*September 28, 2011 by Lola312*

**physics**

A steel ball is thrown vertically upward and a ping pong ball is dropped vertically downward. the two balls roll at the same time. which will have a greater acceleration, why?

*December 17, 2014 by Anonymous*

**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?

*September 23, 2009 by Chan*

**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?

*May 14, 2011 by anne*

**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)

*June 12, 2011 by pavatharani*

**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

*October 12, 2012 by Anonymous*

**science**

If Two bodies of same mass is thrown from top of a tower with same speed simultaneously.one (x) is thrown vertically downward and another(y) is thrown horizontally then what will happen?

*April 23, 2014 by baiju*

**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...

*January 31, 2013 by Rachel*

**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.

*September 15, 2010 by Jennifer*

**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 ...

*September 12, 2007 by Anonymous*

**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 ...

*October 7, 2007 by Lindsay*

**chemistry**

solving problems in bodies thrown vertically downward. solving problems in bodies thrown vertically upward

*January 28, 2012 by mhae*

**physics**

Ball A is dropped from the top of a building of height h at the same instant that ball B is thrown vertically upward from the ground. When the balls collide, they are moving in opposite directions, and the speed of A is twice the speed of B. At what height does the collision ...

*August 9, 2014 by Danielle*

**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?

*February 22, 2013 by jake*

**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 (b) At what speed was ...

*February 3, 2016 by mark*

**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?

*July 5, 2012 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?

*September 14, 2012 by tracey*

**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...

*May 19, 2013 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 ...

*May 20, 2013 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 ...

*May 20, 2013 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 ...

*May 23, 2013 by Amy*

**Physics**

An object is thrown vertically up with a speed of 15m/s. How much time passes before it comes down at 15m/s? (air resistance is negligible)

*October 6, 2015 by Mahmoud*

**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 ...

*October 15, 2007 by Lindsay*

**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 ...

*June 16, 2013 by Anonymous*

**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...

*May 19, 2013 by Amy*

**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 ...

*February 14, 2011 by Mark*

**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 ...

*October 17, 2009 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 ...

*October 18, 2009 by Nikita*

**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 (b) At what speed was ...

*February 4, 2016 by lisa*

**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 ...

*February 14, 2011 by mark matat*

**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.

*April 14, 2008 by Jon*

**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?

*February 2, 2010 by Alysse*

**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?

*February 12, 2010 by Max*

**Uniport ( physis)**

A ball is thrown vertically upward with a speed v from a point h metres above the ground. What is the expression according to the time taken for the ball to strike the ground

*September 15, 2015 by Williams*

**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 ...

*November 7, 2010 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 ...

*November 7, 2010 by matt*

**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 ...

*October 21, 2012 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 ...

*October 22, 2012 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 ...

*October 22, 2012 by Anonymous*

**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?

*February 7, 2010 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? I don't get how to solve it still

*February 2, 2010 by Alysse*

**physics**

A stone is thrown vertically upward at 23 m/s. How fast is it moving when it reaches 14 m?

*October 13, 2016 by anon*

**physics**

An object is dropped from a bridge.A second object is thrown downwards 2.00s later.They both reach the water 35.0m below at the same instant.What is the initial speed of the second object? I will be very grateful if someone could help me out Heres what I have so far d=1/2(at^2...

*June 11, 2015 by cobalt*

**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 ...

*September 3, 2012 by joe*

**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 ...

*November 8, 2012 by Elyssa*

**Maths**

object thrown upward from an initial height of h0 feet with an initial velocity of v0 (in feet per second) is given by the formula h(t)=−16t^2+v0t+h0 feet where t is the amount of time in seconds after the ball was thrown. Also, the velocity of the object is given by v(t...

*October 24, 2016 by Ayvar*

**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 ...

*January 1, 2013 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 ...

*October 23, 2012 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 ...

*October 23, 2012 by Anonymous*

**Calculus**

Use a(t)=-32 ft/second 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?

*February 9, 2015 by Anonymous*

**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?

*September 29, 2012 by joane*