Wednesday

July 23, 2014

July 23, 2014

Number of results: 20,790

**PHYSICS**

AVERAGE VELOCITY AND DISPLACEMENT HEATHER AND MATT WALK EASTWARD WITH A SPEED OF 0.98M/S. IF IT TAKES THEM 34 MINS TO WALK TO THE STORE, HOW FAR HAVE THEY WALKED?
*September 5, 2007 by Susie*

**PHYSICS**

HEATHER AND MAT WALK WITH AN AVERAGE VELOCITY OF 0.98 M/S EASTWARD. IF IT TAKES THEM 34 MIN TO WALK TO THE STORE, WHAT IS THEIR DISPLACEMENT?
*September 26, 2007 by DAISY*

**physics**

Heather and Matthew walk with an average velocity of 0.98 m/s eastward. If it tskes them 34 min to walk to the store, what is their displacement?
*August 21, 2008 by Ashley*

**physics**

heather and Matthew walk with an average velocity of .89 m/s eastward. it takes them 44 min to walk to the store. what is their displacement?
*September 1, 2010 by Marissa *

**Physics**

Heather and Matthew walk with an average velocity of 0.98 m/s eastward. If it takes them 34 min to walk to the store, what is their displacement?
*September 8, 2010 by Jasmine*

**Physics**

i have the answers to these i just need explanations; steps on how to do them 1. Heather and Mathew walk with an average velocity of 0.98 m/s eastward. If it takes them 34 min to walk to the store, what is their displacement? 2.If Joe rides his bicycle in a straight line for ...
*January 28, 2009 by y912f*

**Physics**

Heather and Matthew walk eastward with a speed of 0.94 m/s east. If it takes them 57 min to walk to the store, how far have they walked? Answer in units of km
*September 4, 2012 by tgarci10*

**Physics**

Heather and Matthew walk eastward with a speed of 0.78 m/s east. If it takes them 29 min to walk to the store, how far have they walked? Answer in units of km
*September 4, 2012 by Andres*

**Physics**

Heather and Matthew walk eastward with a speed of 0.78 m/s east. If it takes them 29 min to walk to the store, how far have they walked? Answer in units of km
*September 4, 2012 by Andres*

**Physics**

Heather and Matthew walk eastward with a speed of 0.78 m/s east. If it takes them 29 min to walk to the store, how far have they walked? Answer in units of km
*September 4, 2012 by Andres*

**physics**

Heather and Matthew walk eastward with a speed of .85 m/s east. If it takes them 50 min to walk to the store, how far have they walked? Answer in units of km
*October 4, 2012 by Diondre*

**physics**

Heather and Matthew walk eastward with a speed of 0.98 m/s. If it takes them 34 min to walk to the store, how far have they walked? If Joe rides south on his bicycle in a straight line for 15 min with an average speed of 12.5 km/h, how far has he ridden? It takes you 9.5 min ...
*September 20, 2006 by anonymous*

**physics**

rewriting this, since it was typed wrong. In reaching her destination, a backpacker walks with an average velocity of 1.34 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.68 m/s, due west, turns around, and hikes with an...
*September 18, 2010 by jo*

**physics**

Heather and Matthew walk eastward with a speed of 0.76 meters per second east. If it takes them 50 minutes to walk to the store, how far have they walked? Answer in kilometers
*September 30, 2013 by Christian *

**Physics**

n reaching her destination, a backpacker walks with an average velocity of 1.19 m/s, due west. This average velocity results, because she hikes for 5.07 km with an average velocity of 2.22 m/s due west, turns around, and hikes with an average velocity of 0.749 m/s due east. ...
*August 28, 2011 by Anonymous*

**physics**

In reaching her destination, a backpacker walks with an average velocity of 1.20 m/s, due west. This average velocity results, because she hikes for 5.94 km with an average velocity of 3.28 m/s due west, turns around, and hikes with an average velocity of 0.778 m/s due east. ...
*January 22, 2012 by Alex*

**Physics**

In reaching her destination, a backpacker walks with an average velocity of 1.30 m/s, due west. This average velocity results, because she hikes for 6.22 km with an average velocity of 3.44 m/s due west, turns around, and hikes with an average velocity of 0.321 m/s due east. ...
*September 11, 2012 by StressedStudent*

**physics**

In reaching her destination, a backpacker walks with an average velocity of 1.26 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.60 m/s, due west, turns around, and hikes with an average velocity of 0.470 m/s, due east. ...
*October 20, 2009 by jesica*

**Physics**

In reahcing her destination, a backpacker walks with an average velocity of 1.29 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.59 m/s, due west, turns around, and hikes with an average velocity of 0.44 m/s, due east. ...
*September 18, 2012 by Donald*

**physics**

It takes you 8.2 min to walk with an average velocity of 1.3 m/s to the north from the bus stop to the museum entrance. How far did you walk?
*September 2, 2012 by Carrie*

**physics**

It takes you 9.7 min to walk with an average velocity of 2.2 m/s to the north from the bus stop to the museum entrance. How far did you walk? Answer in units of m
*September 6, 2011 by ashley*

**physics**

it takes you 8.8 minutes to walk with an average velocity of 1.3 m/s to the north from the bus stop to the museum entrance. how far did you walk? answer in units of m
*September 23, 2011 by jasmin*

**physics**

It takes you 7.3 min to walk with an average velocity of 1.5 m/s to the north from the bus stop to the museum entrance. How far did you walk? Answer in units of m
*September 21, 2012 by Carl*

**physics**

Heather in her Corvette accelerates at the rate of (3.40ihat- 2.00jhat) m/s2, while Jill in her Jaguar accelerates at (1.00ihat + 3.40jhat) m/s2. They both start from rest at the origin of an xy coordinate system. Determine the following after 5.50 s. (a) What is Heather's ...
*October 19, 2010 by natalie*

**Physics**

A runner runs 2.9 km in 9 min and then takes 30 min to walk back to the starting point. (a) What is the runner's average velocity for the first 9 min? _______ km/h (b) What is the average velocity for the time spent walking? _______ km/h (c) What is the average velocity for ...
*September 12, 2010 by MeganErin*

**TO BOBPURSLEY**

def of average velocity = t^-1 (x - x0) (average velocity = t^-1(x-x0))t=(avearge velocity)t + x0= x - x0 + x0 = x = (average velocity)t + x0 x = (average velocity)t + x0 def of average velocity were costant acceleration is assumed = 2^-1(v0 + v) plug into x = (average ...
*June 18, 2009 by TO ]BOBPURSLEY*

**Physics**

def of average velocity = t^-1 (x - x0) (average velocity = t^-1(x-x0))t=(avearge velocity)t + x0= x - x0 + x0 = x = (average velocity)t + x0 x = (average velocity)t + x0 def of average velocity were costant acceleration is assumed = 2^-1(v0 + v) plug into x = (average ...
*June 19, 2009 by Physics*

**physics**

It takes you 7.6 min to walk with an average velocity of 2.5 m/s to the north from the bus stop to the museum entrance. How far did you walk? Answer in units of m What is your direction? (multiple choice) 1. West 2. North 3. South 4. East
*September 29, 2011 by Sam*

**Math**

jen and heather went to lunch. When the bill came, Jen discovered that she has only $8.00. Luckily, heather had enough money to pay the other part, or 3/5 of the total bill. How much did Heather Pay?
*December 4, 2012 by Anonymous*

**math**

Jen and heather went to lunch? Jen had $8.00. Heather had enough money to pay the other paert, or 3/5 of the bill. how much did heather pay
*January 4, 2011 by sam*

**math**

Suppose that humans walk about 10,000 steps perday on average. Your average step is probably about 18 inches. If so, how many inches per day do you walk? How many feet per day do you walk? How many miles per day do you walk, to the nearest whole mile?
*January 25, 2009 by Bob*

**elizabeth shelton**

jen and heather went to lunch. when the bill came , jen discovered that she had only $8. luckily heather had enough money to pay the other part, or 3/5 of the bill. how much did heather pay?
*December 16, 2009 by robbie*

**Math**

Heather worked for 15 3/4. She was paid a total of 102 3/8 dollars. What is Heather hourly wage?
*October 17, 2012 by Betsy*

**Math**

Suppose that humans walk about 10,000 steps per day on average. Your average step is probably about 18 inches. If so, how many inches per day do you walk? How Many feet per day do you walk? How many miles per day do you walk, to the nearest whole number?
*January 23, 2009 by Bob*

**5th grade**

jen and heather went to lunch. when the bill came, jen discovered she had only$6. luckily, heather had enough money to pay the other part, or three fifths. how much did heather pay? how much was the bill?
*December 13, 2010 by eddie*

**math**

jen and heather went to lunch. when the bill came, jen discovered she had only$6. luckily, heather had enough money to pay the other part, or three fifths. how much did heather pay? how much was the bill?
*January 27, 2012 by fatama*

**Math**

if Jen and Heather went to lunch. Jen discovered that she had only $8.00. Luckily Heather had enough money to pay the other part or 3/5ths of the bill. How much did Heather pay? and How much was the total bill ?
*January 10, 2011 by Ryan*

**Math**

Okay ... just checking on how to figure this ... Here is the problem: Some researchers estimate that humans walk about 10,000 in their lifetimes, on average. Assume that the average life span is 70 years. a) about how many miles per year does the average person walk? would you...
*November 29, 2007 by Emily*

**physics**

Here's a physics problem. I dont care about the answer, i just want to know how to do it. dont have to be too detailed.. but i dont really kno how to start this 1.) A model rocket blasts off from the ground rising straight upward with a constant acceleration that has a ...
*September 18, 2010 by jo*

**5th grade**

jen and heather went to lunch. when the bill came, jen discovered that she had only eight dollars. luckily heather had enough money to pay the other part, or three fifth of the bill. how much did heather pay? how much was the total bill?
*January 5, 2010 by garg*

**Math**

Jen and Heather went to lunch. When the bill came, Jen discovered she had only $6. Luckily, Heather had enough money to pay the other part, or 3/5 of the bill. How much did Heather pay and how much was the total bill? Please explain how you got these answers.
*November 17, 2010 by Joey*

**Math**

Jen and Heather went to lunch. When the bill came, Jen discovered she had only $8. Luckily, Heather had enough money to pay the other part, 3/5, of the bill. How much did Heather pay? How much was the total bill?
*November 29, 2010 by Zay*

**11th grade**

Heather and Mathew walked eastward with a speed of 9.8 m/s. If it takes them 34 min. to walk to the store, how far have they walked?
*December 14, 2010 by ffdas*

**6th grade Math**

What is the average (mean) distance you walked? Mon-1 2/3 mi. Tues- 2 3/4 mi Wed - 3 1/3 mi. Thurs. - 1 2/3 mi. Fri - 2 3/4 mi. You plan to walk on Saturday. How far must you walk on this day so that your 6 day average is 2 1/2 miles?
*January 7, 2009 by Hannah*

**Math**

Jen and Heather went to lunch. When the bill came, Jen discovered that she only had $8. Luckily, Heather had enough money to pay the other part, 3/5 of the bill. How much did Heather pay? How much was the total bill? I'm having a hard time understanding the steps in getting ...
*December 10, 2012 by Zoe*

**Science (Physics)**

1.A hiker started to walk from her campsite heading east with a velocity of 5 m\s after 6 seconds, she attained a velocity of 7 m\s. What is the average velocity of the hiker? What is the hiker’s acceleration? If the hiker continues walking for another 60 seconds, how far east...
*September 20, 2012 by Shannon*

**Math**

For a chemistry experiment, Heather needs 3.75 grams of salt. How many decigrams of salt does Heather need?
*March 24, 2013 by Kaylee*

**College Algebra**

Matt scored 75 on the calculus midterm. If the final exam counts twice as much as the midterm exam, then for wht range of scores on the final would Matt get an average between 81 and 92?
*September 25, 2011 by Ty*

**AP Physics**

I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were zeros are subscripts my book tells me to derive it this way use the definition of average velocity to derive a formula for x use the formula for average velocity when constant acceleration is assumed to derive a ...
*June 18, 2009 by AP Physics*

**Physics**

It takes you 9.5min to walk with an average velocity of 1m/s to the north from the bus stop to the museum entrance. What is your displacement?
*September 10, 2009 by Anthony Smith*

**science**

It take you 9.5 min to walk with an average velocity of 1.2 m/s to the north from the bus stop to the museum entrance. What is your displacewment?
*September 11, 2011 by Chris*

**Physics**

It takes you 10min to walk with an average velocity of 1.2m/s to the north from the bus stop to the restaurant entrance. What is your displacement?
*September 16, 2013 by Abdullah*

**Physics**

Could someone please review my answers and tell me if I am on the right track? Thank you! A student drove to the university from her home and noted that the odometer reading of her car increased by 12.0 km. The trip took 18.0 min. (a) What was her average speed? (b) If the ...
*August 31, 2012 by Miaow*

**physics**

It takes you 9.5 minutes to walk with an average velocity of 1.2 m/s to the north form the bus stop to the museum entrance. What is your displacement?
*January 24, 2012 by alessa castillo*

**Physics**

A boy is cycling at a constant speed along a straight road to his school. The postions of the boy after fixed time intervals are observed. a. What type of position-time graph can be expected for the motion of the bicycle? b. How can the average velocity of the bicycle be ...
*April 15, 2008 by Jon*

**physics..help PLZ!!**

An object undergoes a displacement while being acted on by a constant force directed to the north. The work done on this object by the force is positive during the displacement. Which statement is necessarily true about the average velocity of the object during the ...
*October 16, 2012 by Elizabeth*

**math**

heather is buying a t-shirt for $8. sales tax is 8 1/4 cents per dollar. how much will heather pay in sales tax on her purchase? a)$0.0825 b)$0.33 c)$0.50 D)$0.66 e)$0.75
*October 3, 2007 by jessica*

**math**

heather is bying a t shirt for 8 dollars. sales tax is 8 1/4 cents per dollar. how much will heather pay in sales tax on her purchase?
*June 20, 2011 by elsa*

**math**

Heather is buying a T-Shirt for $8. Sales tax is 8 1/4 cents per dollar. How much will Heather pay in sales tax on her purchase?
*August 7, 2008 by keanna*

**math**

Heather is buying a T-Shirt for $8. Sales tax is 8 1/4 cents per dollar. How much will Heather pay in sales tax on her purchase?
*September 19, 2008 by heather*

**physics**

In this problem you will determine the average velocity of a moving object from the graph of its position as a function of time . A traveling object might move at different speeds and in different directions during an interval of time, but if we ask at what constant velocity ...
*January 30, 2011 by Bre*

**Mathematics**

Suppose humans walk 10,000 steps a day on average. If your average step it about 18 inches, how many inches do you walk in a day? How many feet per day? How many miles a day?
*January 18, 2011 by Daniel*

**physics**

A jogger runs in a straight line with an average velocity of v1=6.6 m/s for t1=6.0 min, and then with an average velocity of v2=5 m/s for t2=3.0 min. What is her average velocity during this time? Answer in units of m/s.
*August 24, 2011 by Elisabeth*

**physics**

Matt runs away from Ashley. Matt runs 40 m north and 30 m west. What is the minimum distance Ashley must run to catch Matt? Draw the image and label the vectors and scalars.
*October 4, 2012 by Lauren*

**Physics PLEASE**

I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were zeros are subscripts my book tells me to derive it this way use the definition of average velocity to derive a formula for x use the formula for average velocity when constant acceleration is assumed to derive a ...
*June 19, 2009 by Physics PLEASE*

**physics**

What is the average velocity in the following cases? You run 77.9 m West at 2.67 m/s then walk for 133 s at 8.78 m/s West.
*October 14, 2012 by Dasha*

**physics**

What is the average velocity in the following cases? You run 77.9 m West at 2.67 m/s then walk for 133 s at 8.78 m/s West.
*October 14, 2012 by Dasha*

**Physics**

A bus travels 280 km south along a straight path with an average velocity of 88 km/hr to the south. The bus stops for 24 min, then it travels 210 km south with an average of 75 km/hr to the south. A. How long does the total trip last? B. What is the average velocity for the ...
*September 10, 2007 by Lindsay*

**physics**

If it takes you 9.5 min to walk with an avg velocity of 1.4m/s to the north from a bus stop to a museum entrance. how far did you walk??
*December 26, 2010 by Anonymous*

**Physics**

On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 250 west of north. Your average velocity is 2.0 m/s in the same direction as the displacement. Calculate (a) your walking time and (b) your average speed.
*June 17, 2014 by Piper*

**Physics**

On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 25deg west of north. Your average velocity is 2.0 m/s in the same direction as the displacement. Calculate (a) your walking time and (b) your average speed.
*June 24, 2014 by Jade*

**physics**

If you walk for 1.66min at a speed of 1.22m/s and then run for 1.66min at 3.05m/s along a straight track, what is the average velocity?
*August 22, 2012 by Brittany*

**Physics**

Velocity/instantaneous velocity question? In a demonstration a ball falls directly to the ground. Which of the following statements about this event is not correct? (Assume downward is the positive direction.) a)The average velocity during the first half of the fall is greater...
*October 7, 2012 by Lewis*

**Calculus**

Can you check what I did and help me with the third question? Thanks for the help! v(t)=25tsin(t^2) At time=0, you were backed up against the bumper of your car. How far were you from your car two minutes after you started walking? Integral (0 to 2) v(t) dt = 20.671 What was ...
*May 22, 2008 by Anonymous*

**physics**

Compute your average velocity in the following two cases: (a) You walk 73.6 m at a speed of 1.79 m/s and then run 73.6 m at a speed of 4.31 m/s along a straight track. (b) You walk for 1.00 min at a speed of 1.79 m/s and then run for 1.30 min at 4.31 m/s along a straight track.
*September 9, 2012 by Corey*

**6th grade**

Assume that the average speed of a moving object at 1 m was initial velocity and average spped of your cvart 5 m was its final velocity. calculate the change in velocity of your cart from 1 m to 5m. Show your work
*March 26, 2010 by Brittany*

**algebra**

explane, jen and heather went to lunch. when the bill came. jen discovered that she had only 8 dollars. heather had enough money to pay the other paqrt, or 3/5 of the bill.
*December 3, 2012 by gus*

**physics**

You are going for a bike ride. You ride down a straight road at a speed of 9.0 mi/hr. Just as you pass the point which is 3.6 miles from your starting point, you develop a flat tire. You get off your bike and walk it to a bike shop 0.5 miles further down the road. The walk to ...
*June 2, 2014 by Megan h.*

**CALCULUS**

The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s = 3sin(ðt) + 5cos(ðt), where t is measured in seconds. (Round all answers to the nearest hundredth.) (a) Find the average velocity during the time ...
*August 29, 2010 by Terry*

**HURRY........quick post**

Simpson drives his car with an average velocity of 1.2 m/s to the north from the bust stop to the museum entrance. What is your displacement? Look back at the previous question. How much time would Simpson save by increasing his average velocity to 56.0 km/h to the east? A bus...
*September 20, 2006 by anonymous*

**Calculus**

The table shows the position of a cyclist. t (seconds) 0 1 2 3 4 5 s (meters) 0 1.6 4.6 10.4 17.8 25.2 (a) Find the average velocity for the time period [1, 3]. ? m/s (b) Find the average velocity for the time period [2, 3]. ? m/s (c) Find the average velocity for the time ...
*August 29, 2010 by Theresa*

**physics**

A car travels in a straight line with an average velocity of 85 km/h for 2.5 h and then with an average velocity of 30 km/h for 1.5 h. (a) What is the total displacement for the 4 h trip? _____________________ km (b) What is the average velocity for the total trip? ...
*September 12, 2010 by MeganErin*

**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*

**5th grade**

Jen and Heather went to lunch. When the bill came, Jen discovered that she only had $8. Heather had enough money to pay the other part, or 3/5 of the bill. How much was the total bill?
*December 6, 2010 by Oliver*

**physics**

The acceleration of a certain rocket is given by a(t)=bt where b is positive constant compute the the average velocity of the rocket between t=4.5s and 5.5s at t=5.0s if x(t)=0 and b=3.0m/s^3, compare this average velocity and instaneous velocity at t=5.0s
*October 8, 2009 by Kelly*

**Calculus**

If a ball is thrown in the air with a velocity 44 ft/s, its height in feet t seconds later is given by y = 44t - 16t2. (Round your answers to one decimal place.) (a) Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second. ft/s (b) Find the ...
*January 17, 2011 by Ethan*

**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*

**homework: Heather**

Heather: Please dont post you email address...This is a young person safe site, we opt to protect your identity and privacy. Just Heather will do. Thanks. Here is a summary of what I think you need to address. Creator Spirit is bringing about change in lives: desperate lives ...
*January 20, 2007 by bobpursley*

**Urgent!!! Physics**

A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.25 km), and 1.12 s later its has moved to point B with coordinates (6.16 km, 0.900 km). A. Find the x component of its average velocity between A and B. (in Km/s) B. Find...
*January 26, 2011 by andrea*

**DISPLACEMENT and VELOCITY**

A turtle moves 3.5m [E] in 136 s and then moves 1.7m [W] in 88 s. a) What is the average speed of the turtle? b) What is the average velocity of the turtle? average speed: D/T = 3.5m + 1.7m = 5.2m/ 224s = 0.024m/s average velocity:?????????? Have I calculated speed correctly?
*November 14, 2010 by Anonymous*

**math**

Matt walked 3 miles in 3/4 of an hour. At what rate of speed did he walk in miles per hour?
*July 16, 2013 by vincent*

**math**

matt thinks that all the values of x and y that absolute value | | would make this statment true |x+y|= |x|+|y| if x is -5 and y is -6 then replacing x and y for the values would look like this: |x+y|=|-5+-6|= |-11|=11 |x|+|y|= |-5|+|-6|=5+6=11 Is matt a true smarty pants? ...
*November 9, 2010 by kayla*

**math**

Suppose that humans walk about 10,000 steps per day, on awerage. 1. Your average step is probably about 18 inches. If so, how many inches per day do you walk? 2. How many feet per day do you walk? 3. How many miles per day do you wa;k, to the nearest whole mile?
*January 31, 2010 by Katelee*

**physics**

A cyclist is cycling at a uniform velocity of 8m/s for 8 seconds. He then stops paddling and the cycle comes to rest in next ten seconds. Draw the velocity-time graph and calculate: (i) the average retardation.(ii) the distance covered with uniform velocity.(iii) the distance ...
*August 7, 2011 by aisha*

**phisecs**

In a period of 3 h, a man walks 13 km north, turns around and walks 5 km south. Find his average velocity in km/h? Please pay attention to sign. (-) means the average velocity is to the south, (+) means the average velocity is to the North.
*February 20, 2014 by w*

**phisecs**

In a period of 3 h, a man walks 13 km north, turns around and walks 5 km south. Find his average velocity in km/h? Please pay attention to sign. (-) means the average velocity is to the south, (+) means the average velocity is to the North.
*February 21, 2014 by w*

**Physics**

What quantitative information do you need to calculate each of the measurements of an object's motion Displacement: Average velocity: Average acceleration: Displacement: Final position minus initial position Average velocity: Displacement divided by time interval Average ...
*December 20, 2006 by Tpark*

**Calculus**

The displacement (in meters) of a particle moving in a straight line is given by s=2t^3 where is measured in seconds. Find the average velocity of the particle over the time interval [10,13]. the average velocity is 798 What is the instantaneous velocity of the particle when t...
*January 25, 2013 by Anonymous*

**physics**

You are walking along Main street one afternoon. At 1 PM you are 50 meters east of the intersection of Main and Elm streets. You walk due east for 30 seconds, ending up 80 meters east of the intersection of Main and Elm. You then make a left turn and walk due north for 30 ...
*August 25, 2013 by Anonymous*

**PHYSICS**

a)speed is the magnitude of instantaneous velocity. Is the average speed equal to the magnitude of the average velocity? Justify b)under what condition is the average equal to instantaneous velocity? c)a car travels 40 mph for 2 hrs and 60 mph for 3hrs.what is the average speed?
*July 26, 2010 by josh*

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