# Show that in a SIGN the phase difference between displacement and velocity is 90°and between displacement and acceleration is 180°

47,350 results-
## Science

Show that in a SIGN the phase difference between displacement and velocity is 90°and between displacement and acceleration is 180°

*asked by Riya on February 14, 2018* -
## PHYSICS I NEED MAJOR HELP PLEEEAAAAAASSSSSSSSSEEEE

If velocity is positive and increasing then... displacement is.... acceleration is.... If displacement is positive and increasing then...... acceleration is...... velocity is..... If acceleration is positive and increasing then......... displacement

*asked by anonymous on December 14, 2006* -
## PHYSICS

What is the average velocity between 0.6 h and 1 h? A. + 0.4 km/h B. + 1.25 km/h C. + 1.66 km/h D. + 2.5 km/h This questions is hard for me to understand because you can only find average velocity by dividing the displacement by the time, and here they

*asked by Anonymous on July 22, 2010* -
## Physics(Please help)

1) The velocity of a diver just before hitting the water is -11.8 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 1.06 s of the dive? I know that the formula for displacement is deltaX= x -

*asked by Hannah on May 27, 2012* -
## Physics

On this graph, what is the displacement from 0s to 8s? // A. 0.6 m B. 5.0 m C. 2.0 m D. 10.0 m ... I think it's B, if you subtract the final placement and the initial placement. I have a photo to help. Also, what would the instantaneous velocity be here?

*asked by Sandy East Ward on September 15, 2016* -
## physics

Find the resulting displacement of a 15-km displacement and a 25-km displacement when the angle between them is 90 degrees.( Your answer should include magnitude and direction of the displacement.)

*asked by sam on December 6, 2009* -
## calculus

the vertical displacement y of a boat that is rocking up and down a lake, with y measured relative to the bottom of the lake. It has a maximum displacement of 12 meters and a minimum of 8 meters, a period of 3 seconds and an initial displacement of 11

*asked by umma on April 9, 2017* -
## science

A bullet is fired horizontally with a velocity of 250 m/s from the top of a building 100m high. Find the Horizontal and vertical velocities of the bullet when it reaches the ground, the resultant velocity, the horizontal displacement, the net displacement,

*asked by purplekish on November 10, 2013* -
## physics

A bullet is fired horizontally with a velocity of 250 m/s from the top of a building 100m high. Find the Horizontal and vertical velocities of the bullet when it reaches the ground, the resultant velocity, the horizontal displacement, the net displacement,

*asked by ellah on January 9, 2012* -
## physics (Kinematics)

A motorist drives north for 35.0 s at 25.0 m/s and then stops for 23.0 s. He then continues north traveling 13.0 m in 2.00 s. (a) What is his total displacement? (b) What is his average velocity (magnitude and direction)? I am just clueless on this one. I

*asked by eric on February 1, 2007* -
## Physics

An object with mass 0.250 kg is acted on by an elastic restoring force with force constant 10.8 N/m. The object is set into oscillation with an initial potential energy of 0.150 J and an initial kinetic energy of 6.00×10−2 J. What is the amplitude of

*asked by Jake on April 3, 2011* -
## oscillation

An object with mass 0.250 kg is acted on by an elastic restoring force with force constant 10.8 N/m. The object is set into oscillation with an initial potential energy of 0.150 J and an initial kinetic energy of 6.00×10−2 J. What is the amplitude of

*asked by Tyler on April 15, 2010* -
## Maths (Calculus)

The motion of a particle performing damped oscillations is given by the formula y = e-t sin2t Where y - displacement from its mean position and t - time in seconds (a)determine the time at which the velocity of the particle is 0 (b)Determine if the

*asked by dylan james on May 9, 2013* -
## Physics

Brett stats from rest on his skateboard and accelerates at 0.5 m/s2 [N] for 12s, and then maintains his velocity for 15s before falling off his board. He slides along on his back until he comes to rest, accelerating at -2.4 m/s2. a) Calculate the highest

*asked by Nancy on April 17, 2016* -
## Phyiics

Can u just explain how to do projectile motion and give examples of hroiontal velocityand displacement , verical velocity and displacement

*asked by Kim on January 31, 2013* -
## physics

Resolve a displacement of 700 cm into two components along direction lines that lie on opposite sides of the displacement and each of which makes an angle of 30° with the displacement.

*asked by arlene on September 19, 2010* -
## physics

Atom Ant is traveling with an initial velocity of 20.0 cm/s. He begins to accelerate at a rate of 8.00 cm/s2 for 5.00 s. What is his total displacement in the 5.00 second interval? What is his displacement in the last second?

*asked by Anonymous on January 23, 2014* -
## Physics

During the S.H.M of simple pendulum, when the bob comes back to its mean position, the displacement gradually decreases, and eventully becomes zero at the equilibrium position, while it is said that its velocity is still maximum despite of zero

*asked by Ubaid ullah hasan on October 12, 2017* -
## college physics

determine the displacement vector that must be added to the displacement) 25-16) m to give a displacement of 7m pointing in the positive x-direction?

*asked by mumbi on February 27, 2016* -
## physics

What displacement must be added to a 50cm displacement in the +x-direction to give a resultant displacement of 85cm at 25 degrees

*asked by Harry on November 1, 2010* -
## Physics

A van drive 17.5km north. Then it turns west and drives 9.1km. The van then drives 14.5km south. The entire trip takes 40 minutes. What is the average velocity of the truck? I know avg velocity is displacement/time elasped, but I can not figure out what

*asked by Fred on April 24, 2013* -
## 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 21, 2006* -
## Science

How do you measure body volume? I need two ways. Thanks. Displacement is a common method. Fill a barrel full of water, then dunk the body (letting the water overflow), remove the body, and then measure the water level. Another method is to use air

*asked by Laura on September 4, 2006* -
## 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

*asked by Elizabeth on October 16, 2012* -
## Pre-Calc

The displacement from equilibrium of an oscillating weight suspended by a spring and subject to the damping effect of friction is given by y(t) = (1/4)e^-t cos6t, where y is the displacement in feet and t is the time in seconds. Find the displacement when

*asked by Anonymous on September 9, 2015* -
## Math

The displacement from equilibrium of an oscillating weight suspended by a spring is given by y(t) = 2 cos 6t, where y is the displacement in centimeters and t is the time in seconds. Find the displacement when t = 1.45, and round your answer to four

*asked by Anonymous on September 11, 2015* -
## physics

A man in a maze makes 3 consecutive displacements. His first displacement is 5.40m westward, and the second is 18.0m northward. At the end of his displacement he is back to where he started. Use the graphical method to find the magnitude and direction of

*asked by george on January 28, 2013* -
## Physics

If you walk 2 km from your house to a store then back home, whats your displacement? (Displacement is the difference between 1st position and final position)

*asked by Heleny on March 4, 2013* -
## Math

The displacement from equilibrium of an oscillating weight suspended by a spring is given by y(t) = 2 cos 6t, where y is the displacement in centimeters and t is the time in seconds. Find the displacement when t = 1.45, and round your answer to four

*asked by Anonymous on September 11, 2015* -
## calculus

The velocity of a skateboard is v(t) = t^2 - 4 t + 3 m/s when moving in a straight line. A. Find the the change in displacement of the skateboard between 4 seconds and 6 seconds. (Note this may or may not be negative, meaning it goes in the opposite

*asked by ricky on March 8, 2014* -
## physics

Sally the bug has an initial speed of 20.0cm/s. She then accelerates at 8.00cm/s^2 for 5.00s. calculate sallys total displacement? which i did and got 200 cm Displacement during the 5th second? can you please help and show all work

*asked by Georgy on January 6, 2015* -
## phySICS NEED HELP ASAP

Sally the bug has an initial speed of 20.0cm/s. She then accelerates at 8.00cm/s^2 for 5.00s. calculate sallys total displacement? which i did and got 200 cm Displacement during the 5th second? can you please help and show all work

*asked by sarah on January 7, 2015* -
## physics

The velocity of a diver just before hitting the water is -8.8 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.93 s of the dive?

*asked by Keith on January 13, 2011* -
## Physics

The velocity of a diver just before hitting the water is -8.7 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.98 s of the dive?

*asked by Anonymous on January 11, 2011* -
## physics

The velocity of a diver just before hitting the water is -8.8 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.93 s of the dive?

*asked by Keith on January 13, 2011* -
## physics

The velocity of a diver just before hitting the water is -11.1 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 1.18 s of the dive?

*asked by chris on December 13, 2011* -
## PHYSICS

The velocity of a diver just before hitting the water is -8.7 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.89 s of the dive?

*asked by veronica on September 10, 2010* -
## physics

Please Help. I am not sure how to set up or do this problem. Thanks A car is traveling along a road, and its engine is turning over with an angular velocity of +199 rad/s. The driver steps on the accelerator, and in a time of 14.2 s the angular velocity

*asked by bethany on October 28, 2010* -
## Wave and Vibrations

For a particle vibrating simple harmonically, the displacement is 15cm at the instant the velocity is 5cm/sec and the displacement is 8cm at the instant the velocity is 18cm/sec. Calculate i)Amplitude ii) Frequency iii) The time period

*asked by Beah on June 20, 2017* -
## PHYSICS

A car is traveling along a road, and its engine is turning over with an angular velocity of +199 rad/s. The driver steps on the accelerator, and in a time of 14.2 s the angular velocity increases to +263 rad/s. (a) What would have been the angular

*asked by JOHN on October 29, 2010* -
## Physics

A car is traveling along a road, and its engine is turning over with an angular velocity of +190 rad/s. The driver steps on the accelerator, and in a time of 13.0 s the angular velocity increases to +300 rad/s. (a) What would have been the angular

*asked by Sanz on November 1, 2014* -
## science

Suppose you are hiking along a trail. Make a comparison between your displacement and your distance traveled. Check all that apply. -Your displacement must be less than your distance traveled. -Your displacement must be greater than your distance traveled.

*asked by sarah on September 12, 2015* -
## science

for a particle executing simple harmonic motion the displacement is 8 cm at the instant the velocity is 6cm\sec and the displacement is 6 cm at the instant the velocity is 8 cm\sec calculate the amplitude?

*asked by tisha on June 29, 2017* -
## PHYSICS

A block of mass m = 0.889 kg is fastened to an unstrained horizontal spring whose spring constant is k = 89.4 N/m. The block is given a displacement of +0.128 m, where the + sign indicates that the displacement is along the +x axis, and then released from

*asked by Anonymous on November 18, 2015* -
## phyics

A block of mass m = 0.510 kg is fastened to an unstrained horizontal spring whose spring constant is k = 85.3 N/m. The block is given a displacement of +0.112 m, where the + sign indicates that the displacement is along the +x axis, and then released from

*asked by MATT on November 12, 2013* -
## Engines

How do i find total displacement in in^3/min if i have the bore and stroke and and rpm and number of cylinder. i can calculate piston and engine displacement and compression ratios but just not sure about TOTAL displacement and the rpms?

*asked by Matt on September 27, 2006* -
## Physics check

1)How is displacement different from distance? Under what conditions can an object travel a certain distance and yet its resultant displacement be zero? Displacement is a vector quantity while distance is a scalar quantity. If an object goes round-trip its

*asked by Jon on April 14, 2008* -
## physics

Suppose the stone is thrown at an angle of 40.0° below the horizontal from the same building (h = 42.0m) as in the example above. If it strikes the ground 36.7 m away, find the following. (Hint: For part (a), use the equation for the x-displacement to

*asked by mike on May 20, 2016* -
## physics

you throw a ball from a cliff with an initial velocity of 15m/s at an angle of 20° below the horizontal.find(a) its horizontal displacement and(b) its vertical displacement 2.3sec later?

*asked by maaz on October 2, 2015* -
## Physics

The slope of a position vs. time graph represent's the object's... acceleration displacement position speed I thought the answer should be velocity, but that's not an option. Should it be displacement then?

*asked by Max on December 13, 2017* -
## Calculus

If the velocity function of an object is v(t) = -5t4 - 20t + 100, find the displacement function given that the displacement is 50 ft when time is 1 second

*asked by Chong on October 19, 2015* -
## physics

Please help. Thanks! A car/truck with an initial displacement of 10.0 m and an initial velocity of 16.0 m/s accelerates at an average rate of 0.50 m/s2 for 4.0 s. What is the vehicle's displacement after 4.0 s?

*asked by kristi on December 1, 2011* -
## Physics

Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled. a) the displacement is either greater than or equal to the distance traveled b)the displacement is always equal to the

*asked by Tammy on September 9, 2007* -
## Physics

when you are finding displacement from a velocity graph and it says find the displacement at t=3 do you find the area from the points 0 --->3 to the x axis from 0--->3 or no?

*asked by Lor on October 14, 2009* -
## Chemistry

Which of the following is an example of a double-displacement reaction? AlCl3 + 3 NaOH → Al(OH)3 + 3 NaCl Na2O + H2O → 2 NaOH CuCO3 → CuO + CO2 None of the above are examples of double-displacement. A Which of the following is a double-displacement

*asked by Robb4301 on February 4, 2015* -
## physics

Two sinusoidal waves travel in the same direction and have the same frequency. Their amplitudes are Y1 and Y2. The smallest possible amplitude of the resultant wave is: a) Y1 + Y2 and occurs if they are 180 degrees out of phase b)[Y1 - Y2] and occurs if

*asked by susan on February 13, 2007* -
## Difference between position and distance

What is the difference between position and displacement? Would the only difference be that position is a scalar and displacement is a vector?

*asked by Anonymous on November 13, 2010* -
## Physics/Math

A single force acts on a 5.0 kg particle-like object in such a way that the position of the object as a function of time is given by x = 3.0t - 4.0t 2 + 1.0t 3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to

*asked by Technoboi11 on March 1, 2007* -
## science

Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled. a) the displacement is either greater than or equal to the distance traveled b)the displacement is always equal to the

*asked by Tammy on September 6, 2007* -
## Physics

A ball rolls down a ramp that's set on a table, and from there falls off the table. The height of the ramp, length of the ramp, and height from the table are known, and the task is to find the horizontal displacement. One can use mgh = 1/2mv^2 + 1/2kmv^2

*asked by Mary on March 10, 2018* -
## Physics

A ball rolls down a ramp that's set on a table, and from there falls off the table. The height of the ramp, length of the ramp, and height from the table are known, and the task is to find the horizontal displacement. One can use mgh = 1/2mv^2 + 1/2kmv^2

*asked by Mary on March 10, 2018* -
## Physics

a car is accelerating at a uniform rate of 0.85 m/s^2. what is the magnitude of the car's displacement as it accelerates uniformly from a speed of 83 km/h to one of 94 km/h? i tried a formula that solves for displacement and uses initial and final velocity

*asked by y912f on January 31, 2009* -
## physics

The displacement of a particle in centimeters is given by y=8 sin (2πft). If f=20 Hz, find the displacement and the velocity of the particle at a time t=0.01 s and 0.07 s. (ans: y=7.61 cm, v=3.11 m/s, y=4.70 cm, v= -8.13 m/s) After I plug in f to get w

*asked by TOm on January 24, 2013* -
## Math

The velocity (feet per second) of an object is given by the equation v = 3(2t + 1)0.4. What is the equation for the acceleration of the object? What is the equation for the displacement of the object? The displacement is initially 25 feet. What are the

*asked by Jacob on March 13, 2014* -
## Physics (please help)

Two sinusoidal waves travel in the same direction and have the same frequency. Their amplitudes are Y1 and Y2. The smallest possible amplitude of the resultant wave is: a) Y1 + Y2 and occurs if they are 180 degrees out of phase b)[Y1 - Y2] and occurs if

*asked by susan on February 13, 2007* -
## Calculus question

It looks very complicated and I do not know how to even start. Any help would be immensely appreciated. A pendulum has a mass, m, suspended from a rod of length L. At the time t = 0, the pendulum is pulled through an angle θ0 > 0 to the right and given an

*asked by Anonymous on October 7, 2014* -
## physics

The velocity of a diver just before hitting the water is -8.4 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.82 s of the dive? This problem with different numbers has been done on here

*asked by Kyle on January 14, 2011* -
## math

The velocity function (in meters per second) for a particle moving along a line is given by v(t)=t3–4t2. Find the displacement and the distance traveled by the particle during the time interval [-1,6]. (Hint: Draw a graph of the velocity function.) Your

*asked by kitor on January 25, 2014* -
## Physics

what displacement must be added to a 50 cm displacement in the +x direction to give a resultant displacement of 85 cm at 25 degrees? (i know the ans, just need to know how to get the ans)

*asked by Sam on September 14, 2008* -
## Physics

An object has a initial velocity of 10 m/s in the positive x direction. Under a constant acceleration it stops after undergoing a displacement of 148.3 m in the positive x direction. Because it is still under the same acceleration it then travels back in

*asked by Sammy on September 4, 2014* -
## Physics

An object has a initial velocity of 10 m/s in the positive x direction. Under a constant acceleration it stops after undergoing a displacement of 148.3 m in the positive x direction. Because it is still under the same acceleration it then travels back in

*asked by Samantha on September 3, 2014* -
## Physics

Find the instantaneous velocity of a mass on a spring oscillating on a horizontal frictionless surface at the instant when its displacement is half of its maximum displacement x=(x_max/2). Assume the max velocity of that mass during each oscillation is

*asked by Andrea on January 30, 2008* -
## Physics

Resolve a displacement of 700 cm into two components along direction lines that lie on opposite sides of the displacement and each of which makes an angle of 30° with the displacement. 404 cm and 478 cm 404 cm each 383 cm and 415 cm 415 cm each

*asked by Jacob on July 14, 2009* -
## Physics

Kangaroos can easily jump as far as 8.0 m. If a kangaroo makes five such jumps westward and then seven such jumps northward, what angle would the resultant displacement vector make with the northern displacement vector? What is the magnitude of the total

*asked by Nicole on October 1, 2014* -
## 2nd time posting bc i still need HELP! PHYSICS!!!!

The velocity of a diver just before hitting the water is -8.6 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.86 s of the dive? im so stuck. i tried this problem several times, and my

*asked by MC on September 29, 2010* -
## PHYSICS!!!!! HELP!

The velocity of a diver just before hitting the water is -8.6 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.86 s of the dive? im so stuck. i tried this problem several times, and my

*asked by mikey on September 29, 2010* -
## physics !!

A jogger travels a route that has two parts. The first is a displacement A of 2.95 km due south, and the second involves a displacement B that points due east. If the resultant displacement A+B has magnitude 4.13 km, what is the magnitude of B? Im not sure

*asked by Em on September 20, 2010* -
## simple harmonic motion

Quick question: I need to find the acceleration, velocity and displacement at the mid point of SMH. So I know these are the equations: x(t) = Asin(ωt + φ) vx(t) = Aω cos(ωt + φ) ax(t) = −Aω2 sin(ωt + φ) I assume that the displacement is greatest

*asked by Anon on October 27, 2017* -
## physics

A jogger travels a route that has two parts. The first is a displacement A of 2.30 km due south, and the second involves a displacement B that points due east. The resultant displacement A + B has a magnitude of 3.63 km. What is the magnitude of B?

*asked by Fallon on May 9, 2010* -
## Simple harmonic motion

The midpoint of a guitar string executes simple harmonic motion with motion following the form x(t) = A sin(ωt + φ). Amplitude (A)=1.60mm, Angular Velocity (w)=2760 and phase constant (o) = pi/2. How do I find the initial displacement, velocity and

*asked by Anon on October 28, 2017* -
## physics

A simple harmonic oscillator executes motion whose amplitude is 0.20 m and it completes 60 oscillations in 2 minutes. i) Calculate its time period and angular frequency. ii) If the initial phase is 45°, write expressions for instantaneous displacement,

*asked by meenu on March 29, 2015* -
## physics...PLZ HELP! =)

A constant force acts on a moving object. The object makes a fixed magnitude of displacement in some direction. In general, in what direction is the displacement that will result in the object traveling with the least kinetic energy after the displacement

*asked by Elizabeth on October 16, 2012* -
## Physics

Two students are on a balcony 19.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way

*asked by Becca on September 26, 2006* -
## ap calculus

A particle moves along a straight line with displacement s(t), velocity v(t), and acceleration a(t). Show that a(t) = v(t) dv/ds.

*asked by alyssa on November 4, 2010* -
## physics

Starting from home, you bicycle 22km north in 2.3h and then turn around and pedal straight home in 1.3h . What are your (a) displacement at the end of the first 2.3h , (b) average velocity over the first 2.3h , (c) average velocity for the homeward leg of

*asked by tendi on March 25, 2015* -
## physics

A particle undergoes three successive displacement in a plane as follows 4m southwest, 5m east, 6m in a direction 60 degree north of east (a) draw an apropraite vector diagram to represcent the displacement (b) detarmine the displacement that would be

*asked by David on November 4, 2014* -
## physics

Velocity and displacement with uniform acceleration: 1. A car with an initial speed of 23.7 km/h accelerates at a uniform rate of 0.92 m/s^2 for 3.6 s. Find the final speed and the displacement of the car during this time. The final speed is 36 km/h. is

*asked by anonymous on September 26, 2006* -
## Physics

A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical

*asked by Greg on November 30, 2010* -
## Physics

Two cars are traveling on a desert road, as shown below. After 5.0 s, they are side by side at the next telephone pole. The distance between the poles is 107 m. (a) the displacement of car A after 5.0 s 1 m (b) the displacement of car B after 5.0 s 2 m (c)

*asked by Anonymous on August 23, 2011* -
## Grade 12 Physics

Bredan is driving through town at 25m/s and begins to accelerate at a constant rate of -1.0m/s/s. Eventually Brendan comes to a complete stop. A) Represent Brendan's accelerated motion by sketching a velocity-time graph. B) Use the velocity-time graph to

*asked by Annie on September 18, 2014* -
## Calculus and vectors

Velocity represents the slope of a displacement function. Suppose an object was moving to the right, then stopped, then continued moving to the right. What would the displacement function look like?

*asked by Court on December 16, 2013* -
## Physics

Help!?!?! A pontoon boat starts from rest and accelerates at a constant rate of 0.25m/s^2 over a displacement of 290 meters. 1. Find the magnitude of the boats final velocity? 2. Find the time it takes the boat to travel this displacement.

*asked by Mike on October 20, 2015* -
## math

A particle moves along straight line such that its displacement S meters from a given point is S = t^3 – 5t^2 + 4 whee t is time in seconds. Find (a) The displacement of particle at t = 5 (b) The velocity of the particle when t = 5 (c) The values of t

*asked by kudu on February 17, 2015* -
## maths

Let x1(t) and x2(t) be functions that represent the horizontal displacement of two simple pendulums from their central position at time t (in seconds) x1(t) = 0.5sin(pi(t))/5) x2(t) = 0.1sin (pi(t))/4) If both pendulums start at the same displacement at

*asked by Xiang on April 3, 2017* -
## Physics

A particle moving with uniform acceleration has initial velocity u. With the aid of a velocity time graph, show that the displacement s after time t is given by: s=ut+1/2*gt^2

*asked by Lynn on July 4, 2015* -
## Physics

A race car traveling at 44 m/s is accelerated to a velocity of 22 m/s over an 11 s interval. What is the displacement of this time? (Could you show how you got the answer?) Thank you

*asked by Lenny on February 15, 2010* -
## 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 17, 2008* -
## physics

A 10 g particle undergoes Simple Harmonic Motion with an amplitude of 2.0 mm, a maximum acceleration of magnitude 8.0 X 10^3 m/s^2, and an unknown phase constant, theta. What are a.) the period of the motion, b.) the maximum speed of the particle, and c.)

*asked by Scott on November 30, 2010* -
## Physics

A pitcher throws a curveball that reaches the catcher in 0.55 s. The ball curves because it is spinning at an average angular velocity of 335 rev/min (assumed constant) on its way to the catcher's mitt. What is the angular displacement of the baseball (in

*asked by Mary on March 13, 2007* -
## physics

On a distant planet, a ball is dropped from rest from a height of 15.0m. It hits the ground and bounces back up until it is 1.00m below its original position. The trip down and back up takes 10.0s. Find the ball’s average speed, displacement, and average

*asked by catie on September 23, 2018*