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December 21, 2014

Search: 17. A small dog is trained to jump straight up a distance of 1.1 m. How much kinetic energy does the 7.7-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s2.) Show your work

Number of results: 55,689

physical
A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s≤.)
February 26, 2013 by chelsea

physics
A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s2.) Show your work.
March 14, 2012 by MiyaW

science
A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s2.) Show your work.
January 10, 2013 by Anonymous

Science
17. A small dog is trained to jump straight up a distance of 1.1 m. How much kinetic energy does the 7.7-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s2.) Show your work. (3 points)
March 10, 2011 by Anonymous

science
a small dog is train to jump straight up a distance of 1.2m. how much kinetic energy does the 7.2-kg dog need to jump this high ( the acceleration due to gravity is 9.8m/s2
July 20, 2013 by keisha

Physical Science
HELP WITH THESE PLEASE! If you ride your bike at an average speed of 4km/h and nee to travel a total distance of 28 km, how long will it take you to reach your destination? A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2-kg ...
August 7, 2013 by Audriana

Physics ~please help me!
1.) A car (m=1200 kg) moves form 2.0 m/s to 15.0 m/s in 100 m. a) What is the initial kinetic energy of the car? b) What is the final kinetic energy of the car? c) what is the net work applied to the car? d) what force is applied to the car? 2.) A simple pendelum is 1.5 m long...
February 3, 2013 by Isis

Physics
1-A car is lifted a certain distance in a service station and therefore has potential energy with respect to the floor. If it were lifted twice as high, how much potential energy would it have? Answer: twice as much 2-Two cars, one twice as heavy as the other, are lifted to ...
December 9, 2009 by Emily

Physics ~Conservation of Energy~ part 2
1.) A 500 kg roller coaster is pulled to the top of a hill 45 m high and arrives at the top with a zero speed. a) how much work has done by the vhain to pull the car to the top? b) how much potential energy does it have at the top? c)What is the total energy of the system? d) ...
January 30, 2013 by Isis

Physical Science
These are multiple-choice questions: 1.How much work is accomplished when a force of 300 N pushes a box across the floor for a distance of 100 M? A- 300 N B- 30,000 N C- 300 J D- 30,000 J I chose D 2.How do simple machines make work easier? A- They change the strength or ...
May 3, 2009 by mysterychicken

dog behavior
please check my answer thanks :) If you're going to be teaching a dog a lot of different basic commands, what would be best to use as a treat? A. Small scoops of canned dog food B. Small pieces of rawhide C. Half of an ordinary dog biscuit D. An extra special treat the dog ...
July 26, 2008 by Maria

Science
Jill is jumping on a trampoline in her backyard. When will she have both potential and kinetic energy? A. Halfway between the highest point and the lowest point of a jump B. At the highest point of a jump C. At the lowest point of the jump D. Just before she begins a jump
March 6, 2014 by Jenny

physics
A racing dog is initially running at 15.0 m/s, but is slowing down.How fast is the dog moving when its kinetic energy has been reduced by half? By what fraction has its kinetic energy been reduced when its speed has been reduced by half?
July 18, 2010 by Andrea

physics
A racing dog is initially running at 20.0 , but is slowing down. Q1. How fast is the dog moving when its kinetic energy has been reduced by half? Q2. By what fraction has its kinetic energy been reduced when its speed has been reduced by half?
March 18, 2011 by nancy

just checking
My method was correct right?, sorry to post again I just wanted to double check that I had the setup right: A 8000N car is traveling 12 m/s along a horizntal road when the brakes are applied. The car skids to a stop in 4.0s. How much kinetic energy does the car have. my work: ...
November 6, 2006 by Jenny

physics
A block is initially sliding along a horizontal surface with 24.6 J of kinetic energy. Friction causes the blockís speed to be halved in a distance of 3.20 m. a) What is the kinetic energy of the block after traveling the 3.20 m? b) What is the magnitude of the kinetic ...
July 16, 2012 by Katie

physics
A racing dog is initially running at 20.0 m/s, but is slowing down. Question: How fast is the dog moving when its kinetic energy has been reduced by half? Question: By what fraction has its kinetic energy been reduced when its speed has been reduced by half?
March 21, 2011 by nancy

physics
a racing dog is initially running at 10.0 m/s, but is slowing down. (a) How fast is the dog moving when its kinetic energy has been reduced by half?
October 25, 2009 by sarah

Physics kinetic energy
Okay the equation for kinetic energy is = 1/2mv^2 so how would i figure this out?? If a semi-truck decreases its speed from 10 m/s to 5 m/s, its new Kinetic Energy is: a)4 times its old Kinetic Energy b)2 times its old Kinetic Energy c)1/2 its old Kinetic Energy d)1/4 its old ...
October 30, 2010 by Aisumi

physics
the maximum height a typical person can jump from a crouched start is about 60cm. By how much does the gravitational potential energy increase for a 72kg person in such a jump? Where does this energy come from? I know the formula for gravitational potential energy is U=mgh. I ...
December 7, 2010 by physics

physics.
: When the mass hits the pile, it has kinetic energy. This energy is transformed into other forms of energy as the speed of the falling mass rapidly reduces to zero. As this happens, the pile is forced a small distance into the ground. question: Explain how a large force is ...
January 10, 2010 by Richard

Physics
A high jumper of mass 80.0 kg consumes a meal of 4.00 103 kcal prior to a jump. If 3.3% of the energy from the food could be converted to gravitational potential energy in a single jump, how high could the athlete jump?
March 24, 2010 by sean

physics
A high jumper of mass 80.0 kg consumes a meal of 4.00 103 kcal prior to a jump. If 3.3% of the energy from the food could be converted to gravitational potential energy in a single jump, how high could the athlete jump?
March 24, 2010 by sean

Physics (Potential & Kinetic energy)
A 2.0 kg rock falls from a height of 25 m to a point 20 m above the ground. a) how much potential energy does it lose? b) How much kinetic energy does it gain? Thanks.
January 11, 2010 by Anna

physics
How do i find this? A shooting star is a meteor that burns up when it reaches Earth's atmosphere. Many of these meteoroids are quite small. Calculate the kinetic energy of a meteoroid of mass 6.0 g moving at a speed of 45 km/s and compare it to the kinetic energy of a 1400-kg ...
April 4, 2010 by raina

physics
A 20.0-kg model plane flies horizontally at a constant speed of 12.2 m/s. (a) Calculate its kinetic energy. . J (b) The plane goes into a dive and levels off 20.0 m closer to Earth. How much potential energy does it lose during the dive? Assume no additional drag. J (c) How ...
May 11, 2012 by Brianna

Physics
A 5.36 kg object falls freely (ignore air resistance), after being dropped from rest. Determine the initial kinetic energy, the final kinetic energy, and the change in kinetic energy for the following. (a) first meter of fall initial kinetic energy 0 J final kinetic energy ___...
March 8, 2014 by George

Physics
A person reaches a maximum height of 65cm when jumping straight up from a crouched position. During the jump itself, the person's body from the knees up rises a distance of around 50cm . To keep the calculations simple and yet get a reasonable result, assume that the entire ...
October 1, 2014 by Ash

Physical Science
Can someone please check these answers for me? Write T for True or F for False for each statement: 1.Kinetic energy is the energy of motion - T 2.Kinetic energy doesn't depend on an object's direction. - T 3.When an object stops moving, its kinetic energy is zero. - T 4.As the...
April 20, 2009 by mysterychicken

behavior problems (dogs)
Please check my answer thanks When a well-trained dog is placed in a stay and ignores a distraction, the dog is showing A. intelligence. B. sociability. C. dominance. D. impulse control. I picked D
October 6, 2008 by Kai

physics
A woman and her dog are out for a morning run to the river, which is located 3.51 km away. The woman runs at 3.48 m/s in a straight line. The dog is unleashed and runs back and forth at 5.50 m/s between his owner and the river, until she reaches the river. What is the total ...
February 7, 2011 by shaknocka

Physics
A woman and her dog are out for a morning run to the river, which is located 4.56 km away. The woman runs at 3.27 m/s in a straight line. The dog is unleashed and runs back and forth at 5.23 m/s between his owner and the river, until she reaches the river. What is the total ...
September 7, 2012 by Redgy22

science 8th grade
1. The thermal energy of an object is _____. (1 point) its potential energy its average kinetic energy its potential energy minus its kinetic energy its kinetic energy plus its potential energy Thanks, jessica :)
April 9, 2013 by jessie

Physics
A horizontal force of magnitude 30.0 N pushes a block of mass 3.85 kg a distance of 3.00 m across a floor, where the coefficient of kinetic friction is 0.600 a.)How much work is done by that applied force on the block-floor system? b.)During that displacement, the thermal ...
November 30, 2010 by Sam

Physics/Math
Zero, a hypothetical planet, has a mass of 1.0 1023 kg, a radius of 3.0 106 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is launched with an initial kinetic energy of 5.0 107 J, what will be its kinetic energy when ...
March 7, 2007 by Technoboi11

Chem please help
An object A has half the mass and twice the velocity of object B. How are the kinetic energies of A and B related? A. The kinetic energy of B is 4 times that of A. B. The kinetic energy of B is twice that of A. C. The kinetic energy of A is the same as that of B. D. The ...
November 17, 2014 by Morgan

Physics
if a car travels at 50 km/h, it has kinetic energy. How much more kinetic energy does it have at 100 km/h? Answer=100 squared as much (10000)
December 9, 2009 by Emily

Physics
Two objects are mocing about so that their total momentum is zero. What can be said about their kinetic energy? Choose the most descriptive answer. a. the kinetic energy must be greater than zero b. the kinetic energy must be negative c. the kinetic energy must be equal to or ...
March 21, 2011 by Paige

physics
a 2 kg object moving at 5 m/s enters a surface with the coefficient of kinetic friction is .1 and is brought to a full stop. If the cart moved 12.8 m calculate: a) the net work done on the object over the 12.8 m distance (I got 6.4j, but it's probably wrong) b) change in ...
January 21, 2009 by naomi

animals
A stray dog used to bark at the locals in the street. However each time whenever the person who is barked at, approached the dog, it would run away cowardly. a.Why does the dog keeps on barking in a threatening manner whereas it is actually afraid of the locals? b.Is it true ...
December 15, 2014 by iera

Physics
A pitcher claims he can throw a 0.157 kg baseball with as much momentum as a 1.5 g bullet moving with a speed of 1.50 multiplied by 103 m/s. (a) What must the baseball's speed be if the pitcher's claim is valid? m/s (b) Which has greater kinetic energy, the ball or the bullet...
November 6, 2010 by matt

Physics (Help!)
You throw a glove straight upward to celebrate a victory. Its initial kinetic energy is K and it reaches a maximum height H. What is the kinetic energy of the glove when it is at the height H/2?
January 9, 2011 by Erica

Physical Science [repost]
Can someone please check if my answers for these questions are correct? Thanks! 1.Explain in terms of force and distance how using a ramp to load boxes into a truck makes work easier. (Ans-) Less force is applied but the distance is longer. 2.A ball sitting on the top of a ...
May 3, 2009 by mysterychicken

science
1. How much potential energy does a 5kg block have if it is 2m above the ground? 2. What is the mass of an object that has 40J of potential energy and is 10m above the ground? 3. What is the weight of an 8kg object? 4. How much work does it take to lift an 8kg object 2m? 5. ...
October 22, 2011 by Dave

Personal Dimensions of Education
Select the sentence that is punctuated correctly 1 The neighors' new dog is small, quiet, and sky. 2 The neighbors' new dog is small quiet and shy. 3 The neighbors' new dog is, small quiet and shy
November 4, 2012 by Jackie

physics
How much kinetic energy is gained by an electron that is allowed to move freely through a potential difference of 2.5 ◊ 10^4 V? -- U=qV =(1.6*10^-19)(2.5*10^4) =4*10^-15 I'm not sure what other formulas i can use, or how to relate potential energy to kinetic energy because ...
February 26, 2010 by Anonymous

physics
Two people jump out of an airplane. They hold on to each other while falling straight down at a shared terminal speed of 60.7 m/s. Suddenly, they push away from each other. Immediately after separation, the first skydiver (who has a mass of 89.3 kg) has the following velocity ...
October 9, 2014 by Johnny

Physics 11th grade
1) A racing car has a mass of 1525 kg. What is its kinetic energy if it has a speed of 35 m/s? 2) How much potential energy does Tim,with mass 60.0 kg, gain when he climbs a gymnasium rope a distance of 3.5 m? -Benchmark Review-
March 10, 2013 by Isis

physics
What is the kinetic energy of a 19 kg dog that is running at a speed of 7.4 m/s (about 17 mi/h)?
August 31, 2010 by jessie mcgee

physics
What is the kinetic energy of a 26 kg dog that is running at a speed of 8.4 m/s (about 19 mi/h)?
September 3, 2010 by ashley

physics
What is the kinetic energy of a 20 kg dog that is running at a speed of 7.3 m/s (about 16 mi/h)?
January 27, 2011 by Shay

science
What is the kinetic energy of a 14 kg dog that is running at a speed of 9.0 m/s (about 20 mi/h)
February 10, 2011 by Renee

physics
What is the kinetic energy of a 29 kg dog that is running at a speed of 7.9 m/s (about 18 mi/h)?
July 14, 2011 by chanelle

physics
What is the kinetic energy of a 15 kg dog that is running at a speed of 8.9 m/s (about 20 mi/h)?
September 24, 2011 by Anonymous

science
What is the kinetic energy of a 23 kg dog that is running at a speed of 7.4 m/s (about 17 mi/h)?
February 4, 2012 by vanessa

physics
What is the kinetic energy of a 19 kg dog that is running at a speed of 7.7 m/s (about 17 mi/h)?
June 4, 2014 by Anonymous

physics
What was the initial kinetic energy of the small mass before the collision? What is the kinetic energy of the two-mass combination after the collision?
October 26, 2010 by Derek

Physical Science
Good afternoon. Can someone please check if my answers for these questions are correct? Thanks! 1.Explain in terms of force and distance how using a ramp to load boxes into a truck makes work easier. (Ans-) Less force is applied but the distance is longer. 2.A ball sitting on ...
May 3, 2009 by mysterychicken

physical science
What is the kinetic energy of a 27 kg dog that is running at a speed of 8.3 m/s (about 19 mi/h
May 31, 2011 by t

Science
What is the kinetic energy of a 28 kg dog that is running at a speed of 7.0 m\s(about 16mi\h)?
June 2, 2011 by Ann

physical science
What is the kinetic energy of a 29 kg dog that is running at a speed of 8.8 m/s (about 20 mi/h)?
September 9, 2012 by Liz

8th grade physical science
You are on roller blades on top of a small hill. Your PE is 1,000.0 Joules. The last time you check your mass was 60.0 kg. What is the height of the hill? if you start skating down this hill, your poetntial energy will be converted to kinetic. At the bottom of the hill, the ...
January 19, 2012 by Misty

Physics
A rolling barrel with initial velocity 20 m/s encounters a hill 10m tall to slow it down 1. state where its angular speed is 0 2. state where its rotational kinetic energy will be 0 3. state where its translation kinetic energy will be 0 4. for each of the two flat surfaces ...
May 2, 2014 by Michelle

Physical Science-Can someone check my answers?
1) The kinetic energy of an object depends on which of the following? A. the objectís mass and direction B. the objectís speed and mass---------- C. the objectís work and direction D. the objectís speed and work 2) In the following situations, which one does not have kinetic ...
February 18, 2014 by dark1

Physics
Here's the question I'm currently working on... What initial kinetic energy must an α particle have if it is to approach a stationary lead nucleus to within a distance of 35.9 fm? So I looked up a couple of things I thought we need for this problem. I have the atomic ...
April 30, 2009 by Marissa

physics
suppose you throw a ball straight up into the air. it slow down and loses the kinetic energy.where does this energy go?
June 1, 2012 by lisa

Agility Training
Please check my answer thanks :) What is a good rule to follow for training a dog in agility jumps? A. Start with low jumps and gradually increase the height to the proper level. B. Begin by conditioning the dog when it's approximately 18 months old. C. Start by having the dog...
January 13, 2009 by Mallie

physics
I need help with this problem so please help me. 1. A certain photoelectric surface has a threshold frequency of 6.2*10^14 Hz. A. How much kinetic energy is required to produce an electron emission? B. if the surface is illuminated with light that has a frequency 7.1*10^14 Hz...
January 23, 2012 by Jessie

science
A 4kg block is sitting on the floor. (a) How much potential energy does it have? (b) How much kinetic energy does it have? (c) The block is raised to 2m high. How much potential energy does it have? (d) The block is raised to 4m high. How much potential energy does it have? (e...
October 22, 2011 by Ali

AP physics
A 1.60-g bullet, moving at 542 m/s, strikes a 0.249-kg piece of wood at rest on a frictionless table. The bullet sticks in the wood, and the combined mass moves slowly down the table. (a) Find the speed of the combination after the collision. m/s (b) Find the kinetic energy of...
May 10, 2012 by Alica

PHYSICS
A hollow tube (I = MR2) rolls without slipping along the surface. The ratio of its translational kinetic energy to its rotational kinetic energy is a. 1 b. 2 c. 3 d. 1/2 e. 1/3 I say A becasue both add up to get the total kinetic energy.
April 22, 2009 by Sandy

physics
a motorbike has a mass of 300kg, and is being ridden along a straight road. The rider sees a traffic queue ahead. He applies the brakes and reduces the speed of the motorbike from 18m/s to 3 m/s. Use this equation to calculate the kinetic energy lost by the motorbike. Kinetic ...
February 15, 2012 by Eli

Physics
A small boy is flipping a piece of cake across the lunch room at school. He uses a fork as a catapult by holding the handle on the table and pressing on the back of it with his thumb. Only part of the energy delivered to the fork goes into the accelerating the cake, however, ...
April 18, 2011 by micky

physics
A 1580 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.0 m? Calculate the kinetic energy: E_{k} = 1/2 m v^2 Then use that The work performed by the force must ...
November 13, 2006 by tom

Physical science
It takes 300 N of force and a distance of 20 m for a moving cart to come to a stop. How much kinetic energy did this cartpath?
January 5, 2014 by Patti

physics
A 40 N block lifted straight upward by a hand applying a force of 40 N has an initial kinetic energy of 12J. If the block is lifted 0.5 m, how mauch work does the hand do? What is the block's final kinetic energy?
February 18, 2009 by Julie

physics
1. You slowly lift a book of mass 2 kg at a constant velocity a distance of 3 m. How much work did you do on the book? I got 180 for this 2. A 15 kg crate is moved along a horizontal floor with a rope that makes a 30 degree angle with the horizontal. If the tension in the rope...
August 19, 2011 by Mei Lei

science
On average, froghopper insects have a mass of 12.3 mg and jump to a height of 428 mm. The takeoff velocity is achieved as the little critter flexes its leg over a distance of approximately 2.0 mm. Assume a vertical jump with constant acceleration. How long does the jump last (...
October 25, 2013 by kendall

science
On average, froghopper insects have a mass of 12.3 mg and jump to a height of 428 mm. The takeoff velocity is achieved as the little critter flexes its leg over a distance of approximately 2.0 mm. Assume a vertical jump with constant acceleration. How long does the jump last (...
October 25, 2013 by kendall

Science
Classify each of the following as examples of kinetic or potential energy. a) a car driving along a level road. b) an elastic band is stretched to twice its normal length c) a book is at rest on the top shelf of a bookcase d) a lightning bolt produces thunder that travels at ...
June 6, 2014 by Apesetic

Physical Science
What is the kinetic energy of a 1850 kg car that is traveling at 58.0 km/h? B. How much work was done to give the car this kinetic energy assuming the car starts from rest? C. How much work must be done to stop the car?
September 10, 2014 by Barbara

dog behavior
please check my answers thanks so much What is the purpose of having an assistant hold a dog while you're teaching it the longline recall command? A. To prevent the dog from coming to you until it's very eager B. To make sure the dog remains in the sit position until you call ...
July 26, 2008 by Maria

Someone please help me with science?
1. Which of the following shows the correct sequence of energy transformations when listening to the radio? electrical; kinetic; sound; kinetic; electrical electrical; sound; kinetic; sound; electrical sound; electrical; kinetic; electrical; sound kinetic; sound; electrical; ...
April 16, 2013 by Rebekah

7TH GRADE SCIENCE?!?!
1. Which of the following shows the correct sequence of energy transformations when listening to the radio? electrical; kinetic; sound; kinetic; electrical electrical; sound; kinetic; sound; electrical sound; electrical; kinetic; electrical; sound kinetic; sound; electrical; ...
April 16, 2013 by Rebekah

Astronomy
Consider an asteroid of radius 2 km and density 2,500 kgm3 impacting the Earth. When it collides with the surface its kinetic energy is, to a large extent, dumped into the environment, some as heat vaporizing rock and some as mechanical energy throwing rock to great distance ...
December 23, 2012 by sam

physics
a motorbike has a mass of 300kg, and is being ridden along a straight road. The rider sees a traffic queue ahead. He applies the brakes and reduces the speed of the motorbike from 18m/s to 3 m/s. Use this equation to calculate the kinetic energy lost by the motorbike. Kinetic ...
February 15, 2012 by Teddy Roosevelt

Physics
How much kinetic energy does a 1 kg ball have if it has a velocity of 10 m/s? a. 100 J. b. 50 J. c. 10 J. d. 5 J. A ping pong ball and a golf ball move with the same kinetic energy. Which is moving fastest? (golf balls are heavier than ping pong balls). a. The ping pong ball ...
October 19, 2011 by Trinh

Astronomy
1. Consider an asteroid of radius 2 km and density 2,500 kg/m^3 impacting the Earth. When it collides with the surface its kinetic energy is, to a large extent, dumped into the environment, some as heat vaporizing rock and some as mechanical energy throwing rock to great ...
December 9, 2013 by keitanako

physics
A ski jumper launches from a ski jump that is oriented parallel to a hill. The jump has a vertical drop of 50 m and the coefficient of friction μ between the skier and the jump is 0.05. The launch point is 5 m above the hill and there is a small lip at the bottom of the ...
August 16, 2013 by Anonymous

Ms, Sue help me in science
1. As a sample of matter is cooled, which property of its particles increases? (1 point)average kinetic energy pressure buoyancy cohesive forces 2. Kinetic energy is the _____ of motion. (1 point)temperature energy heat state 3. Substances that have a low _____, such as most ...
April 10, 2012 by NIKE

dog behavior
please check my answer thanks so much :) For which one of the following situations would you use a high-pitched voice? A. Teaching the emergency down command B. Reprimanding a dog for misbehavior C. Communicating your authority to a dog D. Calling a dog to come to you I picked D
July 26, 2008 by Maria

physics
Hello everyone, I need help solving this question: Spiderman is running along the rooftops jumping from building to building. The distance between 2 buildings is 20m. What trajectory would be most efficient for him to jump at? At that angle,what must his minimum velocity be to...
September 4, 2012 by Leo

physics
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 2.00 m and cross the bar with a speed of 0.71 m/s?
October 12, 2009 by will

Physics
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 1.75 m and cross the bar with a speed of 0.63 m/s?
November 18, 2009 by katie

physics
In the high jump, Fran's kinetic energy is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must Fran leave the ground in order to lift her center of mass 1.95 m and cross the bar with a speed of 0.70 m/s?
March 3, 2010 by Justin

physics
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 1.65 m and cross the bar with a speed of 0.75 m/s?
March 1, 2011 by Matt

physics
compute the kinetic energy of an 1800 lb automobile traveling at 30 mi/hr. how many times as great is the kinetic energy if the velocity is doubled? compute the kinetic energy, in erg and in joules, of a 2 gram bullet travelling at 500 m/sec.
April 17, 2014 by Anonymous

physics-energy conservation
when you apply the brakes of a car its kinetic energy or energy of motion decreases. a)to what form of energy is the kinetic energy converted? b)where does the resulting energy end up? Do the brake drums on the wheels heat up? so does it convert into heat energy?and the ...
May 8, 2007 by Emma

physics
Two hypothetical planets of masses m1 and m2 and radii r1 and r2, respectively, are nearly at rest when they are an infinite distance apart. Because of their gravitational attraction, they head toward each other on a collision course. Note: Both the energy and momentum of the ...
March 11, 2011 by Rachel

Physics
Thank you so much for answering my questions thus far drwrls. One more,A force of 100 N, acting over a distance of 10 meters, increases the kinetic energy of a moving object by 500 J. This information is sufficient to conclude that the object accelerated, there was friction ...
March 17, 2009 by Harold

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