
Physics
So I have this lab where one of the questions asks to find the average acceleration (m/s^2) The formula is a=v2v1/change in time I don’t understand how to solve this since I only have the average time and distance in (m) for the marble
asked by John on March 17, 2019 
Physics help
find the average acceleration (m/s^2) The formula is a=v2v1/change in time I don’t understand how to solve this since I only have the average time and distance in (m) for the marble Please explain using steps I’m really stuck
asked by . on March 17, 2019 
Physicsmomentum/impluse
hi well i have two questions i don't understand how to solve and all. 1) The front of a 1400kg car is designed to absorb the shock of a collision by having a "crumple zone" in which the front of 1.2m of the car collapses in absorbing the shock of a
asked by becky on December 6, 2006 
calculus
is average rate of change and average value the same or will you get a different answer for each this is calculus so it's the mean average. it's using the formula and integrating. I don't understand your question, but I can assure you that average rate of
asked by david on April 12, 2007 
active physics
from the question we just did, how much force is neede to stop in 20 seconds! OK. think it through. If it's going at 10 m/s, and then it stops, what is it's change in velocity? is it 10 Yes, now it takes 20 seconds, so what is its acceleration (actually
asked by alejandra on November 2, 2006 
Physics
A roller coaster cart travelling due north at 20m/s that turns left during an interval of 4.0s without changing speed. Find the average acceleration. I understand the mathematics behind it (using pythagoras's theorem to find velocity and the formula
asked by Annie on March 17, 2013 
Phyics Word Problems
Could you please check my work and help me with two of the problems. An airplane that flies at 100 km/h with a 10 km/h tailwind travels at 110 km/h relative to the ground. If it instead flies into a 10 km/h headwind, its groundspeed is 100km/h10km/h = 90
asked by Soly on September 3, 2007 
Physics
Could you please check my answers and help me out with the last two? Thanxs! 1.Carefully define the following words: distance, displacement, speed, velocity, acceleration. Does it make a difference if we designate distance as "x" or "d"? (I don't
asked by Jules on September 2, 2007 
Physics
An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 . in diameter. Find the x component of this runner's average velocity between points A and B. GOT THIS!!! 3.4 m/s Find the y component of this runner's average
asked by Josh on September 11, 2006 
Physics Problems
I have a few questions that I don't understand and are having troulbe with, could you please help me out? Thanxs! What is the acceleration of a car that maintains a constant velocity of 100 km/hr for 10 seconds? (For this one don't I have to get the same
asked by Soly on September 4, 2007 
AP Physics
I'm trying to derive the formula v^2 = v0^2 + 2a(xx0) 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
asked by AP Physics on June 18, 2009 
Physics
I'd like to know when it is appropriate to use each formula. Im new to studying physics and its seems that there are certain situations when one formula leads to the answer, yet a derivative of that formula that should lead to the answer is incorrect. For
asked by Jeremy on March 7, 2013 
Physics
Can someone help me with these questions? I don't want the answers just some direction in how to solve them. A motorcycle at a stoplight takes 4.22 seconds to accelerate to 28.0 m/s after the light turns green. What is its average acceleration? An object
asked by Anonymous on August 7, 2018 
Urgent!!! Physics
At an air show, a jet plane has velocity components Vx = 625 and Vy = 415 at time 3.85s and Vx = 838 and Vy = 365 at time 6.52s . A. For this time interval, find the x component of the plane's average acceleration in km/h2. B. For this time interval, find
asked by andrea on January 26, 2011 
Help...pHysics
a ball is thrown at 15m/s at an angle of 30 degrees to the horizontal , how far does it travel horizontally before making contact with the ground? I don't remember very well, but I believe the formula you need is: x0 = .5at^2 + vt + x where x0 is the
asked by sean on October 7, 2006 
physics
electrons are accelerated from rest over a distance of 800m to a velocity of 3x10 7 m/s. what is the acceleration of the electrons and what formula did you use to find the acceleration. (1/2)[V(final)^2  V(initial)^2] = a X V(final) = sqrt (2 a X) a =
asked by Chris on September 2, 2005 
Physics PLEASE
I'm trying to derive the formula v^2 = v0^2 + 2a(xx0) 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
asked by Physics PLEASE on June 19, 2009 
Physics
At an air show, a jet plane has velocity components vx = 695 km/h and vy = 440 km/h at time 4.85s and vx= 933km/h and vy = 465 km/h at time 7.12 s. For this time interval, find (a) the x and y components of the plane’s average acceleration and (b) the
asked by mo on January 22, 2012 
Physics
At an air show, a jet plane has velocity components vx = 695 km/h and vy = 440 km/h at time 4.85s and vx= 933km/h and vy = 465 km/h at time 7.12 s. For this time interval, find (a) the x and y components of the plane’s average acceleration and (b) the
asked by mo on January 22, 2012 
Physics
1) A jetliner, traveling northward, is landing with a speed of 69.3 m/s. Once the jet touches down, it has 787 m of runway in which to reduce its speed to 13.6 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing
asked by Hannah on May 27, 2012 
Physics
At t = 0, an automobile traveling north begins to make a turn. It follows onequarter of the arc of a circle of radius 10.1 m until, at t = 1.52 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find
asked by Alyssa on September 23, 2012 
Physics
At an air show, a jet plane has velocity components vx = 695 km/h and vy = 440 km/h at time 4.85s and vx= 933km/h and vy = 465 km/h at time 7.12 s. For this time interval, find (a) the x and y components of the plane’s average acceleration and (b) the
asked by MOMO on January 21, 2012 
Math
Find the average rate of change in height of the orange from t=2 to t=5 (in feet per second) The equation is h (t)=605+15t4.9t^2 in feet. I know the the average rate of change is change in q/ change in time. Do I put t=3 and subtract the quantity of 5 and
asked by John on January 4, 2017 
Physics,Question ,Solved but about Units?
These are “pluginthenumber” tasks to familiarize you with the main formulas that link the physics concepts of this chapter. They are onestep substitutions, much less challenging than the Think and Solve problems that follow. Average speed ! total
asked by Katherine on October 10, 2012 
Physics
Show that the average speed of a rabbit that runs a distance of 30 m in a time of 2 s is 15 m/s. I have a whole bunch of problems such as these and i'm not sure what math formula to use to figure problem.I know its Acceleration ! change of velocity time
asked by Katherine on October 10, 2012 
physics
car accelerates from 0 to 60 mi/hr in a time of 5.8 secs. a. What is the acceleration of car in m/s squared? need help setting up the problem, thanks acceleration = (speed change)/(time interval) To get the answer in m/s^2, the speed change of 60 mi/hr
asked by mitch on September 4, 2006 
AP Physics
Hello I was trying to find the proof of the formula x = x0 + v0t +.5at^2 were the zeros are subscripts My text book dosen't explain it that well. ok well it involves the formula for average velocity aver velocity = 2^1(v0 + v) were the zero is a subscript
asked by AP Physics on June 13, 2009 
Physics
A sky diver of mass 80.0 ks jumps from a slowmoving aircraft and reaches a terminal speed of 50.0 m/s. a) What is the acceleration of the sky diver when her speed is 30.0 m/s? What is the drag force on the diver when her speed is b) 50.0 m/s? c) 30.0 m/s?
asked by Jean on March 1, 2007 
Physics
Liz rushes down onto a subway platform to find her train already departing. She stops and watches the cars go by. Each car is 8.60 m long. The first moves past her in 1.75 s and the second in 1.17 s. Find the constant acceleration of the train. I know how
asked by Erin on October 10, 2009 
Physics
Jill and Traci are side by side in their cars at a red light. When the light changes, Jill takes off with an acceleration of 2.4m/sec^2. Traci waits 3 seconds and then takes off with an acceleration of 4m/sec^2. How long will it take her to catch Jill?
asked by Rosie on September 2, 2015 
AP Physics
A jet plane is flying at a constant altitude. At time t1 = 0, it has components of velocity vx = 88 m/s, vy = 115 m/s. At time t2 = 30s, the components are vx = 175 m/s, vy = 35 m/s. a) Sketch the velocity vectors at t1 and t2. (figured that out on paper)
asked by tyger2020 on August 27, 2018 
physics
For no apparent reason, a poodle is running counterclockwise at a constant speed of 5.40 m/s in a circle with radius 2.3 m. Let v_1 be the velocity vector at time t_1, and let v_2 be the velocity vector at time t_2. Consider change in v = v_2 v_1 and
asked by jimmy on November 28, 2011 
physics
A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.20km,1.20km), and 1.16s later its has moved to point B with coordinates (6.08km, 0.900km ). a) find the x comonent of it average velocity between A and B.
asked by Amy on January 23, 2012 
Calculus
For the function f(x)=104(x^2), find a formula for the lower sum obtained by dividing the interval [0,1] into n equal subintervals. Then take the limit as n>infinity to calculate the area under the curve over [0,1]. I only need help with the first part.
asked by Jenna on May 5, 2009 
Calc
The wind chill is the temperature, in degrees Fahrenheit, a human feels based on the air temperature, in degrees Fahrenheit, and the wind velocity (v), in miles per hour (mph). If the air temperature is 32degrees Fahrenheit, then the wind chill is given by
asked by Leannna on January 23, 2011 
AP Calculus
The wind chill is the temperature, in degrees Fahrenheit, a human feels based on the air temperature, in degrees Fahrenheit, and the wind velocity (v), in miles per hour (mph). If the air temperature is 32degrees Fahrenheit, then the wind chill is given by
asked by Leannna on January 23, 2011 
physics
The angular position of a point on the rim of a rotating wheel is given by = 4.0t  1.0t2 + t3, where is in radians and t is in seconds. (a) What is the angular velocity at t = 2 s? (b)What is the angular velocity at t = 4.0 s? (c) What is the average
asked by winterWX on March 10, 2007 
Physics
The function ax(t) describes the acceleration of a particle moving along the xaxis. At time t=0, the particle is located at the position x0 and the velocity of the particle is zero. ax(t)=a0e−bt The numerical values of all parameters are listed below:
asked by Natalie on September 1, 2012 
Calc Physics
The velocity as a function of time for an asteroid in the asteroid belt is given by v(t)= vo e^(t/to)i + (vo t/ 2 to) j with vo and to constants. Use ti = 0 as the initial time, and tf = 472 s as the final time. The values for the constants that you will
asked by Michelle on January 17, 2015 
Microeconomics: Cost of Production
Please help me with this question! QUESTION: Heaven Sub, a subway shop, has the following marginal product curve points for its hourly product: (0.5, 13) (1.5, 17) (2.5, 15) (3.5, 11) (4.5, 9) i) When labour increases from 2 to 3 workers, total product
asked by Anonymous on October 20, 2008 
Physics THRUST
To begin I just need to know how to do thrust. A lunar lander in powered descent at 100 m above the surface of the moon slows down from a velocity of 20 m/s to 0.5 m/s at constant acceleration. Assume that the lander has a mass of 20,000 kg and that
asked by Ashley on January 10, 2013 
physics
hello, i have this question. Calculate the average force of friction acting on a wooden block as it propelled along the floor? i have done the following solution first of all i don't know what average force of friction means? i found the Fapplied by
asked by daniel on June 5, 2007 
Please help! math
I don't understand these types of problems Find the average rate of change of f between 1 and x f(x)f(1)/x1 and X cannot be equal to 1 1) f(x)= the square root of x+3 2) f(x)=1/(x^2) 3) f(x)=x^3 + x
asked by kelli on September 21, 2008 
math
I don't understand these types of problems Find the average rate of change of f between 1 and x f(x)f(1)/x1 and X cannot be equal to 1 1) f(x)= the square root of x+3 2) f(x)=1/(x^2) 3) f(x)=x^3 + x
asked by kelli on September 21, 2008 
math
I don't understand these types of problems Find the average rate of change of f between 1 and x f(x)f(1)/x1 and X cannot be equal to 1 1) f(x)= the square root of x+3 2) f(x)=1/(x^2) 3) f(x)=x^3 + x
asked by kelli on September 21, 2008 
Physics
When I asked my teacher for help he told me this This is a logical puzzle. Having 75% of the typical weight means experiencing 75% of the typical gravity. The floor must be falling away with an acceleration of 25% of typical gravity. Here's the question I
asked by Physics on July 10, 2009 
Physics
The angular position of a particle that moves around the circumference of a circle with a radius of 5m has the equation: theta = a*t^2 Where a is constant. theta is in radians t is in seconds Determine the total acceleration and its intrinsic components
asked by Leslie on November 11, 2012 
physics
Consider the motion of an object along a straight path as shown in the ﬁgure. 1 0 1 2 3 4 5 6 7 8 9 b b b b b b b b time (s) velocity (m/s) Find the average acceleration during the time interval 0 s to 3 s. Answer in units of m/s 2 005 (part 2 of 6) 10.0
asked by Anonymous on January 17, 2013 
Physics
I don't know if my answers are right. D: 1)Why is a time interval always positive? I'm not really sure but I wrote down something with vectors and scalars. 2)If the average acceleration of a car is zero in a given time interval, what can you tell about the
asked by Selena on October 1, 2014 
Physics Changing Acceleration
Derive position, velocity, and acceleration kinematics equations for an object undergoing a changing acceleration? I understand that somehow we need to get (∆a/∆t) as the change in acceleration into the kinematic equations but I really don't know where
asked by K on September 28, 2013 
Physics, please help
Hello, I don't know how about to answering this question: work out the problem of a ball of mass m that falls a distance h from rest. It hits the floor and rebounds to its starting height. (a) What total time ie required for the motion? (Neglect the time
asked by amber on October 31, 2006 
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
asked by Tpark on December 20, 2006 
physics
a car travels on a straight road. a) starting from rest, the car is going 44 ft/s (30 mi/h) at the end of 5.0 s. What is the car's average acceleration in ft/s^2 b) in 4.0 more seconds, the car is going 88 ft/s (60 mi/h). what is the car's average
asked by Katie on March 30, 2014 
Physics
1.During a tennis serve,the top of the raquet,which is 15m from its pivot point,accelerats from rest to a speed of 10m/s in a time of 0.10s.Calculate the average tangential acceleration and the top of the racquet and also its angular acceleration.
asked by miss sixty on November 14, 2006 
Math
Verify if question a is correct I calcuated twice now and I am getting 0 as an answer. I don't understand question b a) Examine the function f9x) =2(0.5x1)^2(x+2)^2. Determine the function's average of change from 2
asked by Elli on December 19, 2011 
physics
A man is driving his car ata velocity of 100km/h on a straight road. H e sees a traffic jam at a distance and slows down to 12.5m/s in 3.0s. What is the average acceleration of the car? pls help. I know that the formula for average acceleration is V2V1
asked by ted on October 12, 2011 
Physics
I'm trying to prove Kepler's equations the proof is in my book but I don't understand it (T1/T2)^2 = (s1/s2)^3 ok first what allows us to rewrite that formula as so??? (s1^3/T1^2)=(s2^3/T2^2) my book goes about the proof as m1 ((4 pi^2 r1)/T1^2) which I
asked by QUESTION on August 19, 2009 
modern physics
a record player is switched from 33rpm to 45rpm.The artable changes speed in 2.0s.Calaculate its average angular acceleration and the average tangential acceleration of a point on the turnable that 15cm from the axis rotation. Why are you posting in
asked by mich on November 14, 2006 
Science..help plz...
Can you define speed, motion, constant speed and average speed? And can you get me there formulas? ExampleDistance over speed THANKS MUCH!
asked by Christina on March 4, 2007 
maths  two dimensional motion
The problem I am trying to solve is from AQA Mechanics M1 and is as follows: An object is moving in a plane. At time t=0, it is at the origin, O, and moving with velocity u. After 2 seconds it is at A where OA = 2i  4j. After a further 3 seconds it is at
asked by Maggie on April 9, 2013 
math
The problem I am trying to solve is from AQA Mechanics M1 and is as follows: An object is moving in a plane. At time t=0, it is at the origin, O, and moving with velocity u. After 2 seconds it is at A where OA = 2i  4j. After a further 3 seconds it is at
asked by Maggie on April 9, 2013 
physics
A deorbit burn, similar to that presented in the previous math problem, has been performed. During this deorbit burn a precalculated ∆V (delta V, change in velocity) of 290 ft/s (or 88.4 m/s) will be used to decrease the Shuttle’s altitude from 205
asked by Levi B. on January 20, 2012 
chemistry
I really don't understand rate law. Could you explain that and help with this problem please? Determine the average rate of change of B from t=0 s to t=202 s. A>2B Time (s) Concentration of A (M) 0 0.74 101 0.45 202 0.16
asked by Katie on March 23, 2012 
Physics
I don't know where to start with this one. "Find the work done accelerating a 2 kg box from 2m/s to 3 m/s." Can't find acceleration because I don't know time. In fact, I don't see how any of the kinematic equations can help me out to find either distance
asked by KC on April 6, 2009 
Physics
Calculate the initial velocity for each using the average time of fligh up, the acceleration of gravity and the initial velocity. The average time up for A is 3.18s and for B is 1.87s and using the formula t=Vo Sin(theta)/g. Please and thank you!!!
asked by Mark on June 28, 2015 
Physics
Calculate the initial velocity for each using the average time of fligh up, the acceleration of gravity and the initial velocity. The average time up for A is 3.18s and for B is 1.87s and using the formula t=Vo Sin(theta)/g. Please and thank you!!!
asked by Mark on June 28, 2015 
AP Physics
can you please explain this to me... Were given this eqaution x = At^2 + B were A = 2.10 m/s^2 B = 2.80 m ok and this is an example problem and it's wlking us through it find the instantaneous velocity at t=t2=5.00s equlas the slope of the tangent to the
asked by AP Physics on June 13, 2009 
Physics
Starting from rest, Mr.M's bus achieves a velocity of 25 m/s in a distance of 1.0 km. Find the time and the acceleration. I don't know which formula to use. Delta T = Vf  Vi / Aavg ?
asked by Selena on September 23, 2014 
active physics
a=change in velocity/time, is this the formula i use for this question: a car takes 5 seconds to speed up from 10 m/s to 60 m/s. what is the acceleration? yes! so what do i do from there? If it goes from 10 to 60, what is it's CHANGE in velocity (speed)?
asked by alejandra on November 2, 2006 
Physics
A plane is flying in the horizontal plane. At time t1= 0 s with the components of its velocity are vx= 100 m/s and vy= 120 m/s. At time t2= 20 s the components are vx= 80 m/s and vy = 142 m/s. a. What was the change in the direction of the velocity? b.
asked by Thank You on January 23, 2013 
physics
A car speeds up form 0m/s to 4m/s in 10 seconds. What is the acceleration? Look up the formula for acceleration, and then this is simple plugnchug. Use (v_final  v_initial)/time = average acceleration. Here v_final=4m/s, v_initial=0m/s and t=10.
asked by Jennifer on September 14, 2006 
Physics
A dragster and a driver together have mass of 942.2 kg. the dragster starting from rest attains a speed of 25.5m/s in 0.56 s. 1. find the average acceleration of the dragster during this time interval? I really need the formula 2. What horizontal force
asked by Ama on October 20, 2011 
physics
sorry mr bob purlsey again to annoy you. so i did all my calculations and read about hooke's law yesterday and presented to my teacher. however i was not allowed to used hooke's law because we haven't learned it yet and i did not know how to connect
asked by physics(sorry) on June 14, 2007 
Physics
An athlete finished the 100 meter race in 10sec. What was his average speed? acceleration? Acceleration time? Acceleration distance Help with few questions already got the already got the first two V=d/t =100m/10s =10m/s and Acceleration= VfVi/t
asked by Qin on July 22, 2017 
physics
a person jumps from a window 15m above a safety net. The survivor stretches the net 1.0 m before coming to rest. What was the average deceleration experienced by the person when they were slowed to rest by the net? I do know the answer is 150m/s2,but I
asked by Pat Battaglia on September 10, 2006 
Physics
A hockey puck travelling at 26 m/s [E 22* S] rebounds off the board at 21 m/s [E 22* N]. The puck is in contact with the board for 0.0025 seconds. Determine the average acceleration of the puck over the interval. average acceleration= change in
asked by Raj on January 25, 2007 
physics
1.A 910 kg racecar starts from rest and reaches a speed of 25.1 m/s in 0.48 s. a)What is the average acceleration of the racecar during this time period? b)What is the magnitude of the net force on the racecar? for a) I know: Mass= 910kg V=25.1m/s T=0.48s
asked by Natasha on February 19, 2015 
Physics
These are “pluginthenumber” tasks to familiarize you with the main formulas that link the physics concepts of this chapter. They are onestep substitutions, much less challenging than the Think and Solve problems that follow. Average speed ! total
asked by Katherine on October 10, 2012 
Science
Which formula is used to calculate acceleration? Time divided by change in speed Time x change in speed Change in speed divided by time Change in speed x time Help ? Thanks, Anonymous
asked by Anonymous on April 12, 2018 
Physics
A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is its acceleration? A. 0.21 B. 0.46 C. 0.64 D. 0.78 E. 0.97 acceleration= change in velocity/change in time and the velocity= change in displacement
asked by Mark on July 16, 2008 
Physics
A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.840 m in 0.003 seconds. Determine the acceleration of the bullet. So I basically used the formula: Change in
asked by John on December 12, 2015 
calculus
You are working as assistant to a major movie producer from Hollywood, but mainly you look after prerelease film publicity. You are an old hand at publicity, having worked in several production companies before. Based on previous experience you have
asked by maryam on February 24, 2008 
Physics
Holding a glass of water filled to a depth of 7.8 cm you step into an elevator. The elevator moves upward with constant acceleration, increasing its speed from zero to 2.2 m/s in 3.1 s. Find the change in pressure exerted on the bottom of the glass during
asked by Ryan on April 13, 2010 
PreCalc
[b]1. The problem statement, all variables and given/known data[/b] The average growth rate of the population of a certain city is 7.5% per year. The city's population is now 22,750 people. What is the expected population in 10 years? [b]2. Relevant
asked by Kate on March 28, 2010 
Lab/Chemistry
In lab, I weighed out and found the molarity of 1.108g Na2C2O4 and 1.100g K3Fe(C2O4)3. I titrated an average of 0.0335L of the sodium oxalate solution with KMnO4(potassium permanganate). I then titrated an average of 0.0169L of K3Fe(C2O4)3 X 3H2O with
asked by Tricia on February 26, 2014 
Chemistry please help
In lab, I weighed out and found the molarity of 1.108g Na2C2O4 and 1.100g K3Fe(C2O4)3. I titrated an average of 0.0335L of the sodium oxalate solution with KMnO4(potassium permanganate). I then titrated an average of 0.0169L of K3Fe(C2O4)3 X 3H2O with
asked by Tricia on February 26, 2014 
Physics
An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 m in diameter. Find the x component of this runner's average velocity between points A and B. (answer is 3.44 m/s) Find the y component of this runner's average
asked by Josh on September 13, 2006 
AP Physics
Could you please help me out with the following problems please? If a rocket initially at rest accelerates at a rate of 50 m/s^2 for one minute, its speed will be ? ( I know there are 60 seconds in 1 minute, so would I just use the formula, d=vt, and I
asked by Cheyanne on September 4, 2007 
AP Physics Word Problems ASAP!
Could you please help me out with the following problems please? If a rocket initially at rest accelerates at a rate of 50 m/s^2 for one minute, its speed will be ? ( I know there are 60 seconds in 1 minute, so would I just use the formula, d=vt, and I
asked by Cheyanne on September 5, 2007 
Physics
Suppose the position of an object at time t is (6 + 5t, 2t2, 7t − 5t3). (a) What is the instantaneous velocity at time t? (b) What is the acceleration at time t? (c) What is the instantaneous velocity at time t = 0? (d) What is the acceleration at time t
asked by Sarah on January 7, 2015 
physics
If you accelerate due to gravity (free fall), your acceleration is 9.8 m/s2. In some fields, particularly aviation, this is referred to as 1 g of acceleration. If you were accelerating at 2.5 g, what would be your average acceleration? If you started from
asked by iyzi on October 12, 2013 
Physics
The position of a particle moving along the x axis varies in time according to the expression x=4t^2+2 where x is in meters and t is in seconds. Evaluate it's position at the following times a) Find the displacement from 0s to 3s b) Find the average
asked by Pedro on October 24, 2017 
Free Fall
Thanks for the help with my previous problems. The acceleration to gravity on the moon is 1.6m/sec^2. If a rock is dropped into a crevasse, how fast it will be going just before it hits bottom 30 sec later? How far below the point of release is the bottom
asked by Jen on November 3, 2006 
chemistry
I need help with the equilibrium constant, i understand it but I don't understand the last step when you have to change or find the exponent?
asked by HS on April 6, 2011 
calc: avg value
Find the average value of the function "f(x) = x^2 sqrt(1+x^3)" on the interval [0,2]. and this is what i did.. please check for mistakes. thanks :D f(x) = x^2 sqrt(1+x^3), [0,2] f ave = (1/(ba))*inegral of a to b for: f(x) dx f ave = (1/(20))*integral
asked by COFFEE on July 2, 2007 
physics
A football is thrown horizontally with an initial velocity of (16.5 m/s). Ignoring air resistance, the average acceleration of the football over any period of time is (9.81 m/s2). (a) Find the velocity vector of the ball 1.62 s after it is thrown. (b)
asked by micole on May 14, 2007 
physics
Over a time interval of 1.98 years, the velocity of a planet orbiting a distant star reverses direction, changing from +21.9 km/s to 17.2 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) during
asked by Amena on January 29, 2018 
physics
Over a time interval of 2.17 years, the velocity of a planet orbiting a distant star reverses direction, changing from +19.3 km/s to 22.9 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) during
asked by shant on September 7, 2014 
physics
Over a time interval of 1.72 years, the velocity of a planet orbiting a distant star reverses direction, changing from +18.2 km/s to 18.8 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) during
asked by Kendall on September 11, 2012 
Physics
Over a time interval of 1.98 years, the velocity of a planet orbiting a distant star reverses direction, changing from +21.9 km/s to 17.2 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) during
asked by Amena.S on January 31, 2018
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