Saturday

February 25, 2017
Number of results: 41,537

**Pre calculus**

A woman went for a 48km drive in her car, partly in town in the country. She drove at an average of 40km/hr in town and an average speed of 50km/hr in the country. If the drive took her one hour altogether then how long did she drive in the country?

*January 9, 2014 by Anonymous*

**Physics**

From t = 0 to t = 5.00 min, a man stands still, and from t = 5.00 min to t = 10.0 min, he walks briskly in a straight line at a constant speed of 2.3 m/s. (a) What is his average velocity vavg in the interval 2.000 min to 7.90 min? I found this to be 1.15 m/s (b) What is his ...

*September 5, 2011 by Natalie*

**chem**

How can separate 1L samples of O2 and H2 have the same average velocity/

*November 16, 2007 by mel*

**Physics**

How do you determine the average velocity on a position-time graph?

*December 13, 2010 by pooja*

**science**

What is the average velocity of the argon atoms in the gas phase at 75°F?

*May 18, 2011 by Mike*

**physics**

You drive a car 7 h at 42 km/h, then 7 h at 65 km/h. what is your average velocity? answer in units of km/h

*September 26, 2011 by Alana*

**physics**

you drive a car for 2.0 h at 40km/h, then for another 2.0 h at 60km/h. what is your average velocity?

*February 4, 2012 by erika*

**Physics**

You drive a car 2 h at 48 km/h then 2 h at 62 km/h. What is your average velocity? Answer in units of km/h

*October 4, 2012 by Diondre*

**chemistry**

1)How can you determine average velocity from displacement time graph?

*June 23, 2013 by edward*

**physics**

How long will it take a cat to run 8.2m [N] at an average velocity of 3.7m/s [N]

*September 7, 2014 by cate*

**physics**

A bicycle traveled 150 meters west from point A to point B. Then it took the same route and came back to point A. It took a total of 2 minutes for the bicycle to return to point A. What is the average speed and average velocity of the bicycle?

*January 24, 2013 by frank*

**physics**

a dog runs from point a to b to c in 4.00s. find the dog's average velocity over this 4.00 second interval find the dog's average speed over this 4.00s intervals I can't remember the formula off hand. Thanks for your help in advance.

*September 17, 2013 by deb*

**physics**

A runner dashes from the starting line (x = 0) to a point 127 m away and then turns around and runs to a point 38 m away from the starting point in 13 seconds. To the nearest tenth of a m/s what is the average speed? What is the runner's average velocity in the previous problem?

*February 7, 2014 by Annita*

**Physics**

A particle P travels with constant speed in a circle of radius 7.3 m and completes one revolution in 34.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 11.9 s and t = 16.9 s. The answer here...

*December 17, 2013 by Lina*

**Physics**

A particle P travels with constant speed in a circle of radius 7.3 m and completes one revolution in 34.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 11.9 s and t = 16.9 s. The answer here...

*December 17, 2013 by Lina*

**Science**

A train starts from rest and accelerates uniformly, until it has traveled 3000 m and acquired a velocity of 24 m/s. The train then moves a constant velocity of 24 m/s for 430 s. The train then decelerates uniformly at 0.065 m/s², until it is brought to a halt. 1. In Situation...

*August 21, 2013 by Brandon*

**Calculus**

A particle is moving around the unit circle (the circle of radius 1 centered at the origin). At the point (.6 , .8), the particle has horizontal velocity dx/dt=3. What is its vertical velocity dy/dt at that point? I don't know what equation to use or anything for this problem...

*December 7, 2010 by Anna*

**AP Calculus**

Hi, we just learned this new section today, and I am very confused.... A particle is moving around the unit circle (the circle of radius 1 centered at the origin). At the point (.6, .8) the particle has horizontal velocity dx/dt = 3. what is its vertical velocity dy /dt at ...

*December 14, 2010 by Sally*

**Calculus**

Find the average value of f(t)=-2te^(-t^2) on the interval [0,3]

*December 5, 2007 by Ben*

**calculus**

If we know that for a function, f(x), that f(2) = 6 and f(5) = 1, what is the average rate of change of f(x) on the interval [2,5]?

*September 25, 2008 by Jiszka*

**calculus**

Find the average value of the function f(x) = (2x - 5)^2 on the interval [1, 2].

*July 29, 2011 by Cynthia*

**calculus**

The average (mean) value of (1/x) over the interval 1<= x<= e is a)1 b)(1/e) c)(1/e^2)-1 d)(1+e)/2 e) 1/(e-1)

*February 20, 2012 by illiana*

**Calculus**

Find the average value of the function f(x)= 8/ (3+x)^2 on the interval [0,2]

*May 6, 2015 by Joe*

**Calculus**

Find the average value of the function f(x)= 8/ (3+x)^2 on the interval [0,2]

*May 7, 2015 by Anonymous*

**Math - Averages**

The test average for Louis' calculus class is found by taking the arithmetic mean of his four best test scores. If his first four test scores are 65,82,76 and 87, what score must he get on the fifth test to raise his test average to an 85?

*September 13, 2013 by Venus*

**Please Help, Physics**

1 A runner dashes from the starting line (x = 0) to a point 130 m away and then turns around and runs to a point 11 m away from the starting point in 21 seconds. To the nearest tenth of a m/s what is the average speed? 2 What is the runner's average velocity in the previous ...

*September 2, 2009 by Sari*

**calculus**

10. A military jet flies horizontally with a velocity of 450 m/s and 20,000 m above the ground. When the jet is straight above an artillery gun a shell is fired. Assuming the shell hits the jet. a. Calculate the horizontal component of the initial velocity of the shell. b. ...

*September 20, 2015 by Sue*

**calculus**

If a ball is thrown vertically upward from the roof of 64 foot building with a velocity of 64 ft/sec, its height after t seconds is s(t)=64+64t–16t2 . What is the maximum height the ball reaches? What is the velocity of the ball when it hits the ground (height 0 )?

*October 16, 2009 by michael*

**physics**

if u have swam one lap in a swimming pool, that means from one end to the other and back. In 3.5 h, a swimmer makes exactly 60 laps in the pool, that is 40 m long. Determine the distance the swimmer traveled, the total displacement of the swimmer, the swimmer's average ...

*January 14, 2014 by Bre*

**physics**

You jog at 9.5 km/h for 7.0km , then you jump into a car and drive an additional 16km . With what average speed must you drive your car if your average speed for the entire 23km is to be 22 km/h? Work: i tried setting up a proportion and setting it to each other using the ...

*August 12, 2014 by Zara*

**Physics**

CIRCULAR MOTION A car takes a curve with 300m radius at a velocity of 60 m/s. a) Determine the change in velocity (module and direction) when it travels an arc of 60 degrees b)Compare the magnitude of the instantaneous acceleration of the car with a magnitude of the average ...

*November 9, 2012 by Leslie*

**Physics**

A 275 kg motor cycle and rider accelerate from restand reach a velocity of 20m.s-1 West.the motor cycle wheels exert an average force of 710N East on the road. Calculate the minimum time taken to reach a velocity of 20m.s-1

*January 24, 2016 by Anonymous*

**Physics**

A lead ball is dropped into a lake from a diving board 5.42 m above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. It reaches the bottom 4.98 s after it is dropped. (Assume the positive direction is upward...

*September 7, 2009 by Ray*

**Physics**

A race car moves such that its position fits the relationship x = (5.0 m/s)t + (0.75 m/s3)t3 where x is measured in meters and t in seconds. (a) Plot a graph of the car s position versus time. (b) Determine the instantaneous velocity of the car at t = 4.0 s, using time ...

*August 8, 2009 by annemarie*

**physics**

A race car moves such that its position fits the relationship x = (5.0 m/s)t + (0.75 m/s3)t3 where x is measured in meters and t in seconds. (a) Plot a graph of the car s position versus time. (b) Determine the instantaneous velocity of the car at t = 4.0 s, using time ...

*August 8, 2009 by annemarie*

**physics**

Mary walked north from her home to Sheila's home, which is 4.0 kilometers away. Then she turned right and walked another 3.0 kilometers to the supermarket, which is 5.0 kilometers from her own home. She walked the total distance in 1.5 hours. What were her average speed and ...

*January 27, 2012 by Nakiya*

**Physics**

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

*April 6, 2010 by Jackie*

**Physics**

A car travels a straight road at 140 km/h for 30 min then at 90 km/h for 10 min. It then reverses and goes at 90 km/h for 20 min. a) Find the average velocity for the entire trip. b) Find the average speed for the entire trip.

*January 21, 2017 by Kay*

**Calculus**

If a ball is thrown vertically upward from the roof of 32 foot building with a velocity of 112 ft/sec, its height after t seconds is s(t)=32+112t–16t2 . What is the maximum height the ball reaches?What is the velocity of the ball when it hits the ground (height 0 )?

*April 20, 2010 by Jery*

**Physics**

"A jogger runs with a velocity of 6.0 km/h [25° N of W] for 35 min and then changes direction, jogging for 20 min at 4.5 km/h [65° E of N]. Using a vector diagram, determine the jogger's total displacement and his average velocity for the workout." I know the answer, what I ...

*February 13, 2013 by Pravda*

**Calculus**

Using the equation x(t)= t^3 - 12t + 1, find the displacement during the first 3 seconds. And then find the velocity during the first 3 seconds. See, I know how to find velocity, but there's a question after that that says to find velocity when t=3...so how do you find it ...

*May 8, 2013 by Millie*

**Physics**

In an experiment, a shearwater (a seabird) was taken from its nest, flown 4760 km away, and released. It found its way back to its nest 14.9 days after it was released. If we place the origin at the nest and extend the +x axis to the release point, what was the bird's average ...

*September 4, 2011 by Adnane*

**calculus**

a company introduces a new product for which the number of units sold S is S(t)=200(5-(9/2+t)) where t is the time in months. a.)find the average value of S(t) during the first year. b.) during what month does S'(t) equal the average value during the first year?

*November 15, 2010 by kel*

**calculus**

A Particle moves along the x-axis so that at any time t>0, its acceleration is given by a(t)= ln(1+2^t). If the velocity of the particle is 2 at time t=1, then the velocity of the particle at time t=2 is? The correct answer is 3.346, but how?

*March 11, 2008 by D-MO*

**College Calculus**

If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 96 ft/sec, its height after t seconds is s(t)=48+96t−16t^2. What is the maximum height the ball reaches? What is the velocity of the ball when it hits the ground (height 0)?

*October 26, 2016 by Jaken*

**Physics**

These are “plug-in-the-number” tasks to familiarize you with the main formulas that link the physics concepts of this chapter. They are one-step substitutions, much less challenging than the Think and Solve problems that follow. Average speed ! total distance covered ...

*October 10, 2012 by Katherine*

**Physics**

A player strikes a hockey puck giving it a velocity of 47.673 m/s. The puck slides across the ice for 0.175 s after which time its velocity is 46.473 m/s. The acceleration of gravity is 9.8 m/s2 . If the puck strikes the goalie’s pads and stops in a distance of 4.39 cm, what...

*January 8, 2011 by Chris*

**Chemistry**

A mixture of O2 and SO2 is confined in a vessel at equilibrium. Which statement describes the conditions that are true for the mixture? I. The mass of SO2 is greater II. The average molecular velocity of the O2 is greater III. The average kinetic energy of the O2 is greater ...

*September 21, 2012 by Helen*

**physic**

a car travels east at 89 km/h for 1 hour.it then travels 26 east of north at 141 km/h for another 1 hour. a)what is the average speed for the trip? b)what is the average velocity for the trip?

*September 8, 2014 by siti*

**math**

How can i find the average Velocity and speed for a position time graph*

*February 9, 2010 by jake*

**physics**

what is the average velocity of a vehicle that uniformly accelerates from rest to 38 fps?

*September 27, 2011 by lou*

**Physica**

A box is pulled horizontally by a 60 N force at an average velocity 1.0m/s. The power is

*July 11, 2012 by Q15*

**physics**

A rolling ball moves from x1 = 3.2 cm to x2 = -4.2 cm during the time from t1 = 3.8 s to t2 = 6.1 s. What is its average velocity?

*August 23, 2012 by david*

**physics**

A car goes 10 km in 5 minutes when its average velocity is 80 km/hr. true or false

*August 26, 2012 by jassi*

**physics**

what is the particle's average velocity in the y direction vy between t=0.200s and t=0.300s?

*October 17, 2012 by ramona*

**Physics**

Your velocity changes from 50 m/s to the left to 10 m/a to the right in 15s, what is your average acceleration?

*September 22, 2013 by Katlin*

**Please help :(!!**

Your velocity changes from 50 m/s to the left to 10 m/a to the right in 15s, what is your average acceleration?

*September 22, 2013 by Ash*

**phisecs**

A car travels in a stright line at 43 km/h for 1 h and at 65 km/h for 5 h. Find the average velocity in km/h?

*February 19, 2014 by neon*

**Physics (Kinematics Check)**

What is the average velocity of a dropped brick that falls 4.0 m? vi = 4.0 m/s vf = 0 m/s a = 9.81 m/s^2 t = vf-vi / a t = -4/9.81 t = 0.41 s v = d/t v = 4.0/0.41 v = 9.81 m/s^2 <----------

*July 8, 2015 by Lucina*

**Physics**

What would be the average velocity of an object falling 1.25m from the rest?

*January 25, 2016 by JuliePham*

**Science**

What is the average velocity of a car that moved 25 km east and 40 km wear in 2 hours

*February 1, 2017 by Kalira*

** Cal 1 **

S=6t^3+8t^2+5 -3≤ t≤ -1 Find the body's average velocity for the given time interval.

*February 13, 2017 by Christopher*

**Physics**

An athlete springs a circular 400.0 m track in 50.0 s. Asume he runs a constant speed. a. What is his speed over the entire course? b. What is the magnitude of his instantaneous velocity at any point along the circuit? c. If he starts facing west and runs counterclockwise, ...

*September 17, 2012 by Alex*

**Calculus**

Find the average value of sqrt(cosx)on the interval [-1,1]

*October 21, 2007 by Anonymous*

**calculus**

Find the average value of the function on the given interval f(x) = 2x^3(1+x^2)^4, [0,2]

*January 31, 2009 by bob*

**Calculus**

Find the average value of the function on the given interval: f(x) = e^x/5, [0,5]

*September 3, 2009 by Stacy*

**Calculus**

Prove that the average of LRAM and RRAM is equal to TAM.

*January 24, 2010 by Daniel*

**pre-calculus**

Which of these has the greatest average rate of change between 2 and 3 : f(x)=x ;g(x)=X^2 ;h(x)=x^3?

*January 5, 2011 by Jenny*

**calculus**

What is the average rate of change of y=4x^3 over the interval P(1, 4) and Q(5, 500)?

*January 26, 2011 by evan*

**calculus**

determine the average value of f(x) over the interval from x=a to x=b, where f(x)=100e^-.5x; a=0, b=4

*December 15, 2012 by chola*

**Fundamental Theorm of Calculus**

Find the average value of f(x)=3x^2-2 x on the interval [3,6]

*November 20, 2013 by LIz*

**Fundamental Theorm of Calculus**

Find the average value of f(x)=7x^{-2} on the interval [1,5]

*November 20, 2013 by Chrissy*

**Calculus**

Given k(p) = |p|+4, find the average value of this function on the interval from -4 to 4. I get 6.

*February 16, 2017 by Anonymous*

**Math - Calculus**

The horizontal velocity is constant. (Ignore air resistance.) Recall from your study of trigonometry that if you release a rock at a speed v in a direction that makes an angle α with the horizontal, then the initial vertical velocity vv and the horizontal velocity vh are ...

*February 14, 2017 by Jamie*

**Calculus**

The motion of a spring that is subject to dampening (such as a car's shock absorber)is often modeled by the product of an exponential function and a sine or cosine function. Suppose the equation of motion for a point on such a spring is s(t)=3∗e^(−2t)sin(3ðt) ...

*June 18, 2013 by Robin*

**physics**

. A race car moves such that its position fits the relationship x = (5.0 m/s)t + (0.75 m/s3)t3 where x is measured in meters and in t in seconds. (a) Plot a graph of the car’s position versus time. (b) Determine the instantaneous velocity of the car at t= 4.0 s, using time ...

*September 24, 2012 by shiranee*

**Integral calculus**

A particle is put inside an accelerator at time t=0. After t sec, its velocity is 10^5t^2 m/s. How far does the particle move during the first 10**-2 sec? distance= int velocity dt = INT 1E5 t^2 dt limits 0 to 1E-2 sec

*April 13, 2007 by Febby*

**CALCULUS**

if a ball is thrown vertically upward with a velocity of 80m/s then its height after t seconds is s=80t-16t^2 a) what is the maximum height reached by the ball? b)what is the velocity of the ball when it is 96 ft above the ground on its way up? on its way down?

*October 28, 2007 by matttt*

**calculus**

a revolving light is located at 5 km from a straight shoreline with a constant angular velocity. what velocity does the light revolve if the light moves along the shoreline at the rate of 15km/min when the beam of light makes a angle of 60 with the shoreline?

*September 3, 2014 by dinesh*

**physics**

need help with this physics questions a jogger runs with a velocity of 6km/h 25 degrees north west for 35 minutes and then changes direction , jogging for 20 minutes at 4.5km/h 65 degrees east of north. using a vector diagram determine the joggers total displacement and his ...

*March 1, 2010 by jake*

**Business Calculus**

A company has operating costs of $2000 per thousand items produced. Its revenue function can be modeled by the equation: R(x)=30x/(x+2)² , where x is measured in thousands of items produced, and C and R are measured in thousands of dollars (so C(x)=2). 1. Determine the price-...

*March 25, 2011 by Adriana*

**Math**

The location of an object on the x-axis at time t seconds is given by x(t)= a + mt, where a, m are constants. (a) Where is the object located at time t=1? x(1)= a+m(1) = a+m (b) What is the average velocity of the object between 1 and 2 seconds? x(2)-x(1)/(2-1) a+2m-(a+m)=m (c...

*January 18, 2010 by SC*

**physics**

Motion in a Circle A particle P travels with constant speed in a circle of radius 5.6 m and completes one revolution in 36.0 s. The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 3.6 s and t = 12.5 s. What is ...

*September 18, 2009 by AK*

**physics**

A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30 ° below thehorizontal just before it strikes a horizontal surface. The ball leaves this surface 0.50 slater with a velocity of 2.0 m/s directed 60 ° above the horizontal. What is themagnitude of the ...

*August 12, 2012 by Ben*

**english**

1. He is of average height. 2. He is around average height. 3. He is a little below average height. 4. He is over average height. 5. He is of much more average height. 6. he is a little average in height. 7. He is more average in height. (Are they all grammatical?)

*November 14, 2012 by rfvv*

**calculus**

A person is jumping straight up and down on a trampoline. The height of the center of mass of the person is measured every tenth of a second. It takes just over one second to complete one full bounce. (If you want to see the data, look at the video above.) t (seconds) 2.90 3....

*August 12, 2015 by JuanPro*

**Physics Help!!!!**

A runner in a relay race runs 20m north, turns around and runs south for 30 m, then turns north again and runs 40m. the entire run took 30 seconds. what was the average speed of the runner? what was the average velocity of the runner?

*August 30, 2014 by Kim*

**ENG102**

Question 1. A car moves 26 km due east then 14 km due north. It then turns along a path running north-east with 15 km, then 17 km due west. If the time for the entire journey is 2 hrs, Find; (a) the car’s average speed in m/s (b) the car’s average velocity in km/h

*May 1, 2012 by DESMOND*

**University of Ghana**

• A car moves 26 km due east then 14 km due north. It then turns along a path running north-west with 15 km, then 17 km due west. If the time for the entire journey is 2 hrs. • Find; • (a) the car’s average speed in m/s • (b) the car’s average velocity in km/h

*March 23, 2013 by Daniel*

**physics**

need help with doing this combining vector question A jogger runs with a velocity of 6km/h 25 degrees north west for 35 minutes and then changes direction , jogging for 20 minutes at 4.5km/h 65 degrees east of north. using a vector diagram determine the joggers total ...

*March 2, 2010 by jake*

**Calculus - Falling Body Problem**

Near the surface of the earth, the acceleration of a falling body due to gravity is 32 feet per second per second, provided that air resistance is neglected. If an object is thrown upward from and initial height of 3000 feet with a velocity of 75 feet per second, find its ...

*November 4, 2016 by Jamie*

**Calculus**

How to integrate with position, velocity and accelleration

*May 10, 2009 by Caitlin*

**calculus**

2 given s(t)=3t +5t+3, find the instantaneous velocity when t i= 5.

*October 18, 2014 by Duane*

**Physics**

A 0.4 kg ball strikes a smooth level floor with a velocity of 5.0 m/s, 60 degrees below the horizontal. It rebounds off the floor with an unknown velocity and reaches a maximum rebound height of 0.60 m. If the duration of the collision with the floor is 50 milliseconds, then...

*October 25, 2012 by AH*

**Science**

how do you calculate the average velocity of a quarter dropped from a tower after 10 seconds?

*October 5, 2008 by Layla*

**Physics**

how to find the average velocity and speed for an entire postion time graph

*February 21, 2010 by jake*

**physics**

when a car goes around an 8-km track in 20-minutes. what is the average speed and velocity.

*April 1, 2012 by jim*

**physics**

a horse walks 56 meters in 75 second. what is his average velocity?show the work

*May 3, 2012 by lisa*

**physics**

a truck travels at 90km/hr W for 10 min. then at 110 km/ hr for 38 km what was the trucks average velocity

*January 17, 2013 by Anonymous*

**physics**

on a trip a car covers 42.3 miles in 40.0 minutes. find the average velocity in m/s and km/hr

*June 13, 2014 by roger*