Saturday

February 25, 2017
Number of results: 13,079

**Physics**

A river flows due east at 1.42 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 11.9 m/s due north relative to the water. If the river is 389 m wide, how far downstream is the boat when it reaches the north shore?

*October 25, 2012 by Mac*

**Physics**

An airplane is flying North with a velocity of 22 m/s. A strong wind is blowing East at 50 m/s. What is the airplane's resultant velocity (magnitude and direction)?

*June 10, 2010 by Desirae*

**Physics HELP!**

An airplane is flying North with a velocity of 22 m/s. A strong wind is blowing East at 50 m/s. What is the airplane's resultant velocity (magnitude and direction)?

*June 11, 2010 by Desirae*

**math :)**

1. A toy airplane is 10 inches long.If the actual airplane is 75 feet long, find the scale of the model. A. 2:14 ft B. 1:90 ft C. 4:25 ft D. 1:120 ft My answer is B ?

*November 20, 2013 by ciara*

**Physics**

A model airplane with a mass of 0.748 kg is tethered by a wire so that it flies in a circle 30.2 m in radius. The airplane engine provides a net thrust of 0.806 N perpendicular to the tethering wire. (b) Find the angular acceleration of the airplane when it is in level flight...

*November 17, 2010 by Anonymous*

**Physics**

A hunter game in the woods keeps. Track of his movements from his car he travels 1/2 mile down a trail into the woods that leads directly north east. From there he bushwacks 3500 paces directly north before stopping for a drink. As he is putting his flask away he hears a noise...

*December 20, 2012 by kat*

**Algebra II**

An airplane leaves airport A and flies 200 km. At this time its bearing from Airport B, 250 km to the west, is 120 degrees. How far is the airplane from B?

*May 17, 2010 by Alexa*

**Algebra II**

An airplane leaves airport A and flies 200 km. At this time its bearing from Airport B, 250 km to the west, is 120 degrees. How far is the airplane from B?

*May 17, 2010 by Lyndsie*

**Trigonometry**

AN AIRPLANE IS FLYING AT A HEIGHT OF 1000 m. THE ANGLE OF DEPRESSION OF AIRPORT A FROM THE PLANE IS 15°. CALCULATE THE HORIZONTAL DISTANCE BETWEEN THE AIRPLANE AND THE AIRPORT.

*June 16, 2016 by Anonymous*

**Geometry**

an airplane flying at an altitude of 10,000ft or 1.89 miles. The airport at which it is schooled to land is 50 mi away. Find the average angle at which the airplane must descent for landing round your answer to the nearest degree.

*December 12, 2014 by Anonymous*

**Physics**

A car makes a trip due north for three fourths of the time and due south one-fourth of the time. The average northward velocity has a magnitude of 27m/s, and the average southward velocity has a magnitude of 17m/s. What is the average velocity, magnitude and direction of the ...

*September 14, 2008 by DELLI*

**Math**

An airplane travels 226 miles in 2 hours. At that rate, how far will the airplane travel in 8 hours?

*November 16, 2014 by Penny*

**Physics**

Runner A is initially 2.4 km west of a flagpole and is running with a constant velocity of 8.4 km/h due east. Runner B is initially 2.2 km east of the flagpole and is running with a constant velocity of 7.4 km/h due west. What will be the distance of the two runners from the ...

*September 14, 2012 by Fiona*

**Physics**

Runner A is initially 2.4 km west of a flagpole and is running with a constant velocity of 8.4 km/h due east. Runner B is initially 2.2 km east of the flagpole and is running with a constant velocity of 7.4 km/h due west. What will be the distance of the two runners from the ...

*September 14, 2012 by Fiona*

**English**

An airplane is a vehicle with wings and one or more engines that enable it to fly through the air ----------------------- In this sentence, what does 'it' refer to? Does 'it' refer to 'an airplane' or 'a device'?

*November 22, 2016 by rfvv*

**physical**

Question 10 An airplane traveling north at 400 m/s is accelerated due east at a rate of 50 m/s2 for 6 s. If the effects of air resistance and gravity are ignored, what is the final speed of the plane? 1. 300 m/s 2. 400 m/s 3. 500 m/s 4. 700 m/s 5. 800 m/s

*August 9, 2010 by Nhlanhla*

**pre calculus**

1. a plane has heading of 54 degrees & airspeed of 225mph. The wind is blowing at 33mph from 144 degrees. what are its actua heading & airspeed? Round to one decimal place. A) 61.4deg, 257.1mph B) 7.4deg, 66114.0mph C) 136.6deg, 288mph D) no solution

*March 28, 2011 by zooey*

**Math - Calculus**

Directions (or bearings) on Earth are measured in degrees, running from zero to 360 degrees, clockwise, starting with 0 degrees being due North. So due East for example, is 90 degrees, due South 180 degrees, and Northwest is 315 degrees. You are swinging a rock clockwise (...

*February 21, 2017 by Jamie*

**Physics**

An airplane pilot tries to fly directly east with a velocity of 800.0 km/h. If wind comes from the southwest at 80.0 km/h, what is the relative velocity of the airplane to the surface of Earth?

*October 27, 2009 by Amber*

**physics**

Imagine an airplane flying under a cloud during a thunderstorm.Do the passengers get electrocuted? EXPLAIN WHY or WHY NOT. Should the airplane's wheels be insulators or conductors? EXPLAIN WHY.

*May 3, 2010 by Sandhya*

**physics**

Imagine an airplane flying under a cloud during a thunderstorm.Do the passengers get electrocuted? Explain why or why not. Should the airplane's wheels be insulators or conductors? Explain why.

*May 3, 2010 by Sandhya*

**Physics**

Two boats are heading away from shore. Boat 1 heads due north at a speed of 4 m/s relative to the shore. Relative to boat 1, boat 2 is moving 35° north of east at a speed of 1.2 m/s. A passenger on boat 2 walks due east across the deck at a speed of 1.3 m/s relative to boat 2...

*February 28, 2015 by Cetris*

**Physics**

A supersonic jet airplane passing directly overhead creates a shock wave that makes an angle of 51∘ with the horizontal. What is the speed of the airplane? I know that I need to use Sin(x)=c/v but keep getting an incorrect answer.

*January 19, 2017 by Kelsey*

**physics**

This is the question to one of my physic problem. A person standing outside their house is passed by a runner heading West at a steady pace of 3.3 m/s. Right when the runner passes by, the person accelerates towards the south at a rate of 0.36 m/s2 for 1.2 seconds. Determine ...

*August 30, 2012 by Megan*

**physics**

This is the question to one of my physic problem. A person standing outside their house is passed by a runner heading West at a steady pace of 3.3 m/s. Right when the runner passes by, the person accelerates towards the south at a rate of 0.36 m/s2 for 1.2 seconds. Determine ...

*August 30, 2012 by Megan*

**Physics**

A river flows due East at 0.979 m/s. A boat crosses the river from the South shore to the North shore by maintaining a constant ve- locity of 12.8 m/s due North relative to the water. The river is 306 m wide. What is the velocity of the boat relative to shore? Answer in units ...

*August 12, 2011 by Nicole*

**Math**

Two vans leave a parking lot at the exact same time. A few minutes later, car 1 is 8 miles due east of the parking lot and car 2 is 15 miles due south of the lot. How far a part are the two cars in miles?

*May 8, 2014 by Jim*

**physics**

can someone take me through this vector combination question please an airplane is observed to be flying at a speed of 600km/h. The planes nose points west. The winds velcoity is 40km/h 45degrees west of south. Find the air planes velocity relative to the ground.

*March 4, 2010 by jake*

**Pre Cal**

An airplane leaves an airport and flies due west 150 miles and then 230 miles in the direction S 39.67 degrees W. How far is the plane from the airport at this time to the nearest mile.

*April 9, 2012 by Kara*

**science**

Your airplane just ran out of gas. Your plane is falling at a velocity of 80m/sec down. At that velocity, how long will it take your airplane to reach the ground?

*October 4, 2012 by Bokyung*

**Pre Cal**

An airplane travels due west for 2.5 hours at 340 miles per hour. Then it changes course to S51°W. Find the airplanes distance from its point of departure and its bearing, after a total flight time of 4.5 hours.

*October 11, 2016 by Rosa*

**us history**

Which of these statements best compares the economic development of the North and South during the first half of the 19th century? More factories and railroad lines were built in the North than in the South. The North developed more trade connections with Europe than the South...

*March 27, 2015 by Oscar*

**Physics**

A bus travels 270 km south along a straight path with an average velocity of 89 km/h to the south. The bus stops for 25 min, then it travels 250 km south with an average velocity of 68 km/h to the south. How long does the total trip last? Answer in units of h

*September 9, 2011 by R.S.*

**Physics**

A bus travels 340 km south along a straight path with an average velocity of 88 km/h to the south. The bus stops for 22 min, then it travels 230 km south with an average velocity of 75 km/h to the south. How long does the total trip last? Answer in units of h

*October 4, 2012 by Diondre*

**English**

1. When is the report due? It is due on Monday. 2. When is the book due? It is due on March 10th. (Are the short dialogues correct?) 3. What are you saying? 4. What are you speaking? 5. What are you talking about? (Are the three commonly used and grammatical?)

*March 9, 2010 by rfvv*

**phys**

A toy airplane of mass 0.159 kg is tied to the ceiling with a string. The airplane moves in a horizontal circle of radius 2.97 m, with a constant speed of 1.51 m/s. What is the angle the string makeswith the vertical?

*December 7, 2009 by stacy*

**physics**

Consider a level flight turn of a propeller-driven airplane in which the airplane makes a complete circular turn in 1.6 min. If the plane's speed is 200 m/s, what is the radius of the circle?

*December 2, 2010 by kaitlyn*

**physics**

Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.

*March 28, 2012 by Kristie*

**physics**

4 Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.

*March 31, 2012 by Jim*

**physics**

Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.

*March 31, 2012 by christy*

**Physic**

If a clock in an airplane is found to slow down by 5 parts in 1013, (i.e., ∆t/∆to = 1.0 + 5.0 × 10. −13), at what speed is the airplane travelling? (Hint: You might need to use an expansion for y)

*August 22, 2012 by Sanaz*

**Physics**

Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1500 kg and was approaching at 9.00 m/s due south. The second car has a mass of 700 kg and was approaching at 15.0 m/s due west. (a) Calculate the final velocity of the cars. (b) ...

*June 26, 2014 by Michelle*

**Physics**

An airplane flies due north at 250 km/h relative to the air. There is a wind blowing at 60 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

*October 6, 2010 by Preston*

**Physics**

An airplane flies due north at 220 km/h with respect to the air. There is a wind blowing at 65 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

*November 9, 2011 by Martha*

**science**

An airplane flies due north at 235 km/h relative to the air. There is a wind blowing at 65 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

*September 16, 2012 by mary*

**Physics**

An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

*October 25, 2012 by Maddie*

**Physics**

An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?

*October 25, 2012 by Maddie*

**physic**

An airplane flies due north at 200 km/h relative to the air. There is a wind blowing at 70 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

*December 5, 2012 by BILLY*

**physics**

⦁ Find the resultant vector (magnitude and direction) for the sum of: vector A which has magnitude 365 N at 48° south of west, vector B which has magnitude 224 N at 26° south of east, and vector C which has magnitude 488 N at 12° west of north. Express the direction ...

*September 15, 2014 by chiamaka*

**geometry**

PLEASE HELP WITH A FEW QUESTIONS triangle ABC has side lengths 8, 15, and 17 do the side lengths form a pythagorean triple? the length of the hypotenuse of a 30-60-90 triangle is 7 find perimeter to approach the runway, a pilot of a small plane must begin a 10descent starting ...

*May 23, 2012 by brittany*

**Calculus & Vectors**

A search and rescue aircraft, travelling at a speed of 240 km/h starts out at a heading of N 20 degrees West. After travelling for 1h and 15 min, it turns to a heading of N 80 degrees E and continues for another two hours before returning to base. Find the total distance the ...

*February 1, 2014 by Sara*

**trig**

an airplane leaves the airport and flies due west 150 miles and then 240 miles in the direction 200°40'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?

*March 26, 2010 by kat*

**Math**

An airplane leaves the airport and flies due west 170 miles and then 240 miles in the direction 200°30'. Assuming the earth is flat, how far is the plane from the airport at this time( to the nearest mile)?

*February 14, 2012 by Joe*

**Geom./Trig.**

an airplane flies directly overhead at 540mph. 1 minute later is seen at an angle of elevation of 34 degrees. how far did the airplane fly during that time? what is the elevation of the plane?

*March 28, 2012 by Emma*

**Physics**

HELP!!! Consider an airplane with a total wing surface of 140 . At a certain speed the difference in air pressure below and above the wings is 3.0 of atmospheric pressure.Find the lift of the airplane

*April 9, 2013 by Ericca*

**Science**

An airplane has to fly eastward to a destination 856 km away. If wind is blowing at 18.0 m/s northward and the air speed of the plane is 161 m/s. In what direction should the plane head to reach its destination. So I know the direction is south east but can someone give me the...

*April 30, 2008 by Jane*

**physics**

a plane flys 350 km south along a straight path with an average velocity of 125 km/h to the south. the plane has a 30 minute layover and then travels 220 km south with an average velocity of 115 km/h to the south. what is the average velocity of the trip

*November 13, 2012 by connor*

**physics**

A bus travels 250 km south along a straightpath with an average velocity of 84 km/h to the south. The bus stops for 26 min, then it travels 240 km south with an average velocity of 70 km/h to the south. How long does the total trip last?

*September 20, 2010 by Taylor*

**math**

An airplane travels with a speed of 145 mph in calm air. the wind is blowing with a velocity of 23 mph from N72degreesE. If the plane is headed in a direction N63W, find the magnitude of the speed and the direction of the airplane with reference to the ground. In what ...

*February 24, 2015 by Dan*

**Algebra 3 and trig**

An ocean liner is 177 miles due west of lighthouse A. Lighthouse B is 265 miles due south of lighthouse A. Find the distance from lighthouse B to the liner and the bearing of the ocean liner from lighthouse B.

*June 12, 2013 by Lauren*

**math**

Houses are arranged in a school compound. Thus, Blue house is 4 km due East of Red, Yellow is 3 km due south of Blue and Green is 4 km on a bearing of 230° from the Yellow. Calculate the distance and bearing of the Red house from Green house.

*May 7, 2016 by good*

**Constitution**

Article I, Section 6 of the Constitution is often referred to as: A. the Due Process Clause. B. the Interstate Commerce Clause. C. Due Diligence Clause. D. the Freedom from Arrest Clause. im confused between A and B 2. What case invalidated an earlier effort by Congress to ...

*January 17, 2015 by Amy*

**Physics**

An airplane cruises at 880km/h relative to the air. It is flying from Denver, Colorado due west to Reno, Neveda, a distance of 1200km and will then return. There is a steady 90km/h wind blowing to the east. What is the difference in flight time between the two legs of the trip?

*January 28, 2015 by Skyler*

**phsyics**

A 8.0×10−2-{\rm kg} toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.30 m/s in a horizontal circle of radius 0.41 m, Find the angle the string makes with the vertical.

*December 16, 2010 by Lisa*

**Calculus**

The drag on an airplane traveling at velocity v is D=av^2+(b/v^2) where a and b are positive constants. At what speed does the airplane experience the least drag. I have so far that D'=-2b/v^3 do i set this equal to zero then i get 0=-2 don't think that is the right way where ...

*September 26, 2012 by kieran*

**Math/Trig**

An airplane leaves an airport and flies due west 150 miles and then 170 miles in the direction 210°50'. Assuming the Earth is flat, how far is the plane from the airport at this time (to the nearest mile)

*September 27, 2012 by Jackie*

**math**

Houses are arranged in a school compound. Thus, Blue house is 4 km due East of Red, Yellow is 3 km due South of Blue and Green is 4 km on a bearing of 230° from the Yellow. What is the distance and bearing of the Red house from Green house?

*May 7, 2016 by Wesley*

**Physics**

An airplane is flying in a horizontal circle at a speed of 106 m/s. The 81.0 kg pilot does not want the centripetal acceleration to exceed 6.16 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81 m/s2. Answer in ...

*November 13, 2012 by Kyla*

**Physics**

An airplane is flying in a horizontal circle at a speed of 104 m/s. The 73.0 kg pilot does not want the centripetal acceleration to exceed 6.98 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81 m/s2. Answer in ...

*March 5, 2013 by Anonymous*

**physics**

An airplane of mass 1.30 104 kg is moving at 52.0 m/s. The pilot then increases the engine's thrust to 7.00 104 N. The resistive force exerted by air on the airplane has a magnitude of 3.00 104 N.

*November 24, 2014 by kc*

**trig**

A plane is flying with an airspeed of 150 miles per hour and heading 155°. The wind currents are running at 25 miles per hour at 160° clockwise from due north. Use vectors to find the true course and ground speed of the plane.

*November 16, 2012 by janice*

**Physics**

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle increases to 2R. The ...

*June 8, 2014 by Sam*

**Physics**

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle increases to 2R. The ...

*June 8, 2014 by Sam*

**Geometery**

A, B, C and D are on horizontal level ground and CT is vertical pole. B is 35 m due east of C, A is 60 m South of C and D is 60 m West of A. Calculate the angle of elevation of T from N. I m really suck...plz help

*February 22, 2015 by Bob*

**physics**

A man walks 10km due south. The displacement of the man from the initial position is

*January 22, 2014 by etieno*

**Resultant Force?**

a force F1 of 35 newtons pulls at an angle of 15 degrees notrth of due east. A force F2 of 75 newtons pulls at an angle of 55 degrees west of due south. Find the magntiude and direction of the resultant force. Please help me - I have no idea what to do or even where to start!

*April 23, 2012 by Tabby*

**Math**

A plane leaves an airport X, 20.6degrees east and 36.8 north degrees and flies due south along the same longitude for 8 hours at the rate of 1000km/h to another airport Y, 20.6degrees east and tita degree south. The plane then flies west to another airport Z for 8hours at the ...

*November 1, 2014 by Anonymous*

**Physics**

A car makes a trip due north for three-fourths of the time and due south one-fourth of the time. The average northward velocity has a magnitude of 25 m/s, and the average southward velocity has a magnitude of 32 m/s. Taking northward to be the positive direction, what is the ...

*September 16, 2014 by Dakkota*

**English**

1. When is the due date of the report? It is on May 1st. 2. When is the deadline of the book? It is tomorrow. 3. When is the report due? It is due this morning. 4. When is the book due? It is due this Thursday. (Are the questions and answers all correct? Are the questions the ...

*April 16, 2010 by rfvv*

**Social studies**

1. what post war industry became more important in south carolina due to new roads? a. tourism* b. agriculture c. manufacturing d. mining

*April 30, 2014 by what*

**Physics**

A flock of geese is attempting to migrate due south, but the wind is blowing from the west at 5.4 m/s . If the birds can fly at 7.9 m/s relative to the air, what direction should they head?

*April 8, 2016 by Megan*

**physics**

A river flows due east at 1.65 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.7 m/s due north relative to the water. What is the velocity of the boat relative to shore?

*January 29, 2014 by Tsion*

**Physics**

A river flows due east at 1.54 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 11.2 m/s due north relative to the water. What is the velocity of the boat relative to shore?

*February 4, 2016 by Carrie*

**Physics**

please show me how to solve this 1. A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. the bus stops for 24 min. then, it travels 210 km south with an average velocity of 75 km/h to the south a. how long does the total trip last...

*January 30, 2009 by y912f*

**physics**

a car driving down a road due south at a constant speed of 55 mph. what is the car's acceleration? how do you know

*May 28, 2013 by Anonymous*

**physic**

a car travels 3.0km due south and then4.0km west what is lt's displacememt from the starting point

*October 3, 2016 by precious*

**Physics**

A flight controller determines that an airplane is 20.0 south of him. Half an hour later, the same plane is 46.0 northwest of him. If the plane is flying with constant velocity, what is the direction of its velocity during this time? What is the magnitude of its velocity ...

*May 23, 2013 by Anonymous*

**math**

An airplane leaves Atlanta at 2 PM and flies north at 250 miles per hour. A second airplane leaves Atlanta 30 minutes later and flies north at 280 miles per hour. At what time will the second airplane overtake the first? Answer Choices 6:20 PM 6:00 PM 6:40 PM 6:50 PM 7:10 PM

*October 29, 2016 by Zara*

**Physics**

An airplane is ﬂying in a horizontal circle at a speed of 104 m/s. The 88.0 kg pilot does not want the centripetal acceleration to exceed 6.15 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81m/s2. ...

*February 8, 2013 by Dave*

**Pre-Cal**

Two airplanes take off from an airport at the same time. One travels on a heading of 45 at 420 mph and the other on a heading of 150 at 400 mph. After two hours, how far apart are the airplanes? A.650.66 miles B.1,160 miles C.1,301 miles

*March 17, 2012 by Adrianna*

**English check**

1.)Supported the ideas of plainness, divine mission, and grace =a.)The North--Puritanism b.)The South---Gentlemen Planters c.)Both 2.Came to America to find freedom to worship and the Promised Land =a.)The North--Puritanism b.)The South---Gentlemen Planters c.)Both 3.Believed ...

*August 24, 2010 by Ariel*

**Physics**

a ship is heading due north at 7.50 m/s relative to the water. The local current is 1.52 m/s in a direction 42 degree west of north. Find its velocity relative to earth( find both direction and magnitude of the velocity)

*December 19, 2012 by Hep*

**maths**

a man goes 5m west and then 12m due south.Find the the distance of the man frm the starting point

*September 30, 2015 by faris*

**Social Studies**

Toword the end of the Civil War, how did General Grant affect Southern civilians? A) He allowed those living in the South to keep their ownership of land B) He ordered his generals to impose a "total war" strategy on the South**** C) He ordered his army to to rebuild rural ...

*February 22, 2017 by Sherlock*

**Physics**

A jet airplane has an intensity of 109.7 W/ m2 when heard at a distance of 26.8 m. What is the maximum sound intensity heard by a person on the ground when the airplane is 8500 m overhead?

*November 22, 2010 by Jill*

**calculus**

An airplane is flying on a bearing of 80 degrees at 540mph. A wind is blowing with a bearing of 100 degrees at 55mph. Find the component form of the velocity of the airplane.

*February 7, 2010 by Kelly*

**Physics**

A truck travels beneath an airplane that is moving 120 km/h at an angle of 24◦ to the ground. How fast must the truck travel to stay beneath the airplane?

*October 9, 2011 by Louis*

**physics**

you and a flight attendant toss a ball back and forth in an airplane in flight. Does the kinetic energy of the ball depend on the speed of the airplane? Defend you answer.

*November 29, 2013 by princess*

**physics**

you and a flight attendant toss a ball back and forth in an airplane in flight. Does the kinetic energy of the ball depend on the speed of the airplane? Defend you answer.

*November 29, 2013 by princess*

**physics**

a truck beneath an airplane that is moving 180 km/h at an angle of 47 to the ground. How fast must the truck travelto stay beneath the airplane? Answer in units of km/h.

*October 28, 2015 by chris*