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

47,585 results
1. 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
2. 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
3. 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
4. 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
5. 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
6. 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
7. 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
8. 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
9. 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
10. 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
11. Physics

Show how the displacement of a runner changed during a sprint race.draw a displacement-time graph to show this data, and use it to deduce the runner's speed in the middle of the race. Displacement (m) 0 4 10 20 50 80 105, Time(s) 0 1 2 3 6 9 12.

asked by Bilal on November 20, 2018
12. 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
13. 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
14. 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
15. 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
16. 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
17. 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
18. 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
19. 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
20. 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
21. 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
22. 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
23. 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
24. 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
25. 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
26. 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
27. 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
28. 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
29. 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
30. 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
31. 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
32. 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
33. 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
34. 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
35. 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
36. 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
37. 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
38. 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
39. 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°?

asked by jincky on November 25, 2018
40. 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
41. 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
42. 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
43. 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
44. 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
45. 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
46. 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
47. 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
48. 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
49. 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
50. 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
51. 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
52. 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
53. 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
54. 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
55. 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
56. 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
57. 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
58. 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
59. 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
60. 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
61. 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
62. 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
63. 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
64. 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
65. 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
66. 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
67. 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
68. 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
69. 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
70. 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
71. 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
72. 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
73. 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
74. 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
75. 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
76. 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
77. 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
78. 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
79. 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
80. 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
81. 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
82. 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
83. 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
84. 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
85. 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
86. 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
87. 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
88. 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
89. 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
90. 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
91. 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
92. 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
93. 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
94. 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
95. 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
96. 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
97. 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
98. 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
99. 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
100. 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