# A block weighing 70.7 N rests on a plane inclined at 21.6° to the horizontal. The coefficient of the static and kinetic frictions are 0.23 and 0.12 respectively. What is the minimum magnitude of the force F, parallel to the

22,562 questions, page 55
1. ## vector mechanics- dynamics

The slender bar AB weights 8 kg and moves in the xy plane, with its ends constrained to follow the smooth horizontal and vertical guides as shown in Figure Qi. By assuming the bar AB is initially at rest; a) Calculate the angular acceleration of the bar.

asked by Farah on October 14, 2014
2. ## physics

To take off from the ground, an airplane must reach a sufficiently high speed. The velocity required for the takeoff, the takeoff velocity, depends on several factors, including the weight of the aircraft and the wind velocity. Part A: A plane accelerates

asked by JD on September 10, 2013

Consider a block of copper that is a rectangular prism (a box) with sides 15 cm by 20 cm by 50 cm. The resistivity of copper is 1.68e-8. If you consider the resistances between the three sets of parallel faces, which has the middle value? A. The resistance

asked by anonymous on February 22, 2018
4. ## Physics

A 5.20 g pellet is shot horizontally from a BB gun at a speed of 29.1 m/s into a 20.8 g wooden block. The wooden block is attached to a spring and lies on a frictionless table. If the collision is inelastic and the spring constant k = 22.0 N/m, what is the

asked by Shane on November 14, 2016
5. ## solid mensuration

a certain city block is in the form off parallelogram. two of it's side are each 225 meters long, the other two sides are each 145 meters long. if the distance between the first two pair is 80 meters. find the area of the land in the block and the length

asked by Anonymous on January 15, 2015
6. ## university physics

A 5.20 g pellet is shot horizontally from a BB gun at a speed of 29.1 m/s into a 20.8 g wooden block. The wooden block is attached to a spring and lies on a frictionless table. If the collision is inelastic and the spring constant k = 22.0 N/m, what is the

asked by lily on November 15, 2016
7. ## calculus

An airplane's velocity with respect to the air is 580 miles per hour, and its bearing is 332 degrees. The wind, at the altitude of the plane, is from the SW and has a velocity of 60 mph. What is the true direction of the plane, and what is the speed with

asked by ASH on May 24, 2012
8. ## Trig

Plane leaves airport with heading of 110 degrees at 300 mph, the wing out of the southwest is 42 mph. locate the plane after 4 hours? find the distance back to airport and angle from due east?

asked by Stone on November 15, 2013
9. ## physics

an air plane takes a circuitous route. the journey is split into 4 sections. d1= 6000km (30.0 n of e) d2= 5600km (NW) d3= 4500km (35.0 S of W) d4= 7000km (12.0 W of S) - Find the resultant displacement of the air plane what do i do, and what is the coreect

asked by hi on January 14, 2008
10. ## Math

a small plane flies due south with a speed of 112 m/s while a tailwind blows due south at 31 m/s. Draw and label a vector diagram and calculate the magnitude and direction of the plane's resultant velocity

asked by Penn on September 25, 2016
11. ## Physics

a pilot must fly a destination 520 km away in a direction of N30 degree E. The air speed of the plane is 320Km and the wind speed is 85 km/h E20 degree Suth. Find the heading of the plane and the time for the trop.

asked by Jessica on October 4, 2009
12. ## PHYSICS

A block of mass 0.86 kg is suspended by a string which is wrapped so that it is at a radius of 0.061 m from the center of a pulley. The moment of inertia of the pulley is 4.60×10-3 kg·m2. There is friction as the pulley turns. The block starts from rest,

asked by Emily on October 21, 2012
13. ## physics

A 15 g lead bullet is tested by firing it into a fixed block of wood with a mass of 1.05 kg. The block and the embedded bullet together absorb all the heat generated. After thermal equilibrium has been reached, the system has a change in temperature

asked by jen on September 23, 2010
14. ## Algebra

If a plane can travel 500 miles per hour with the wind 400 miles per hour against the wind, find the speed of the plane without a wind and the speed of the wind? What is the speed of the plane in still air?

asked by rangel on March 24, 2012
15. ## Physics

A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm x 2cm x 3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

asked by Maria on March 20, 2013
16. ## Science

A 450-g block is attached to a spring of spring constant 45 N/m and is in simple harmonic motion on a frictionless surface with an amplitude of 7.5 cm. A second identical block, moving at 12 m/s in line with the spring, strikes the first one when the

asked by Lucy on June 9, 2016
17. ## physics - Energy

A 0.280 kg block on a vertical spring with a spring constant of 4.12 × 10^ 3 N/m is pushed downward, compressing the spring 0.0600 m. When released, the block leaves the spring and travels upward vertically. The acceleration of gravity is 9.81 m/s^ 2. How

asked by rei on January 14, 2012
18. ## Physics

A 0.250 kg block on a vertical spring with a spring constant of 4.09 × 10 3 N/m is pushed downward, compressing the spring 0.0900 m. When released, the block leaves the spring and travels upward vertically. The acceleration of gravity is 9.81 m/s 2 . How

asked by Angel on December 11, 2011
19. ## Physics

A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

asked by Jack on March 22, 2013
20. ## Physics

A 2.0kg block hang from a vertical spring causes it to stretch by 200cm. If the 2.0kg block is replaced by a 0.50kg mass and the spring is stretched and released, what are the frequency and period of the oscillations? Please help and provide solutions and

asked by Ellie on January 22, 2013
21. ## PHYSICS

A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

asked by Anonymous on March 21, 2013
22. ## physics

A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

asked by rita on March 22, 2013
23. ## AP Physics C

A stone is catapulted at time t = 0, with an initial velocity of magnitude 21.5 m/s and at an angle of 35.3° above the horizontal. What are the magnitudes of the (a) horizontal and (b) vertical components of its displacement from the catapult site at t =

asked by Shane on September 17, 2012
24. ## physics

A stone is catapulted at time t = 0, with an initial velocity of magnitude 20.2 m/s and at an angle of 39.1° above the horizontal. What are the magnitudes of the (a) horizontal and (b) vertical components of its displacement from the catapult site at t =

asked by Rachel M on February 8, 2012
25. ## physics

a plane heads north but because of a wind blowing to the west the plane flies at a resultant velocity of 620mi/h 22 W of N . what was the velocity of the wind?

asked by beth on September 21, 2011
26. ## MATHS

A PLANE FLIES 120km on a bearing of 045 and then flies 150km due east.how far east of the starting point is the plane?

asked by CHIZ on June 17, 2016
27. ## science

When a particle starts from rests and moves with constant acceleration then why its path is always a straight line?

asked by priya on June 1, 2016
28. ## accounting

the responsibility for issuing a report on a company's internal controls over financial reporting rests with?

asked by ko on October 14, 2012
29. ## physics

A.Use newtons first law to explain why whiplash occurs? B.why are cars fitted with head rests?

asked by OwamIII on February 6, 2014
30. ## Physics

A 75 kg pilot flies in her plane in a loop and notices that at the top of the loop, where the plane is completely uspside down for an instant, she hangs freely in her seat. the airspeed indecator reads 120m/sec. (a)what is the radius of the planes loop?

asked by Maira on May 3, 2010
31. ## physics

An object is thrown with velocity v from the edge of a cliff above level ground. Neglect air resistance. In order for the object to travel a maximum horizontal distance from the cliff before hitting the ground, the throw should be at an angle theta with

asked by me on December 29, 2006
32. ## Math

The blocks of a side walk block are 6ft by 12ft.the blocks for a drive way are 6ft by 12ft.what is the diffrence between the area of the side walk block and the drive way block.what is the perimeter

asked by Gia on April 2, 2012
33. ## Physical science

A create is pulled across a horizontal surface with a force of 100N which makes an angle of 30 degrees with a horizontal.(a)draw a diagram of the horizontal and vertical components of the force.(b)resolve the force in its parallel and

asked by Nomagcina on January 31, 2013
34. ## Physics

A 5.60-kg particle has the xy coordinates (-1.20 m, 0.500 m), and a 5.20-kg particle has the xy coordinates (0.600 m, -0.750 m). Both lie on a horizontal plane. At what x and y coordinates must you place a 1.60-kg particle such that the center of mass of

asked by winterWX on February 21, 2007
35. ## physics

A block of mass M1 = 0.320 kg is initially at rest on a cart of mass M2 = 0.680 kg with the cart initially at rest on a level air track. The coefficient of static friction between the block and the cart is ?s = 0.610, but there is essentially no friction

asked by Mke on September 10, 2014
36. ## physics

A 2.606 kg block is on a horizontal surface with ìk = 0.160, and is in contact with a lightweight spring with a spring constant of 577 N/m which is compressed. Upon release, the spring does 7.212E-1 J of work while returning to its equilibrium position. I

asked by help on November 23, 2010
37. ## Physics

A 6.2 g bullet is fired into a 2 kg ballistic pendulum. The bullet emerges from the block with a speed of 281 m/s, and the block rises to a maximum height of 15 cm . Find the initial speed of the bullet. The acceleration due to gravity is 9.8 m/s 2 .

asked by Somya on December 12, 2016
38. ## Physics

A swimmer dives off a block into the water. The block is 31 inches above the surface of the water. Using projectile motion, what angle did they dive to reach point A on the surface of the water? I don't know what the variables stand for in this problem. Xf

asked by Samantha on May 2, 2016
39. ## Science

A plastic block has sides that measure 4 centimeters, 2 centimeters, and 3 centimeters. Its mass is 19.2 grams. Predict whether the block will float in water. Will it float in olive oil?

asked by RJ on April 20, 2010
40. ## physics

A 150 N/m, 5 m spring on a 26 degree incline is compressed 2.3 m and a 5 kg block is placed on it. If we neglect friction, how far up the incline from where it starts will the block travel? How fast will it be traveling when it is 0.2 m up the incline from

asked by Max on November 5, 2008
41. ## Physical

A cubical block of wood of side 0.5 m floats in water. Given that the densities of wood and water are 800 and 1000 kg/m3 respectively Calculate the depth of the block immersed in water.

asked by Edward on November 1, 2016
42. ## Physics

A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf

asked by Ali on September 20, 2010
43. ## physics

A 150 N/m, 5 m spring on a 26 degree incline is compressed 2.3 m and a 5 kg block is placed on it. If we neglect friction, how far up the incline from where it starts will the block travel? How fast will it be traveling when it is 0.2 m up the incline from

asked by Bob on November 5, 2008
44. ## Physics

A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf

asked by Ali on September 20, 2010
45. ## Physics

A 69kg skateboarder, at rest on a frictionless surface, throws a 4.0kg rock with the velocity given by x=3m/s y=4m/s, where the x and y axes are both in the horizontal plane. What is the x component of the subsequent velocity of the skateboarder? WHat is

asked by James on April 2, 2009
46. ## Physics

In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp.

asked by Lola on October 1, 2013
47. ## Physics

In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp.

asked by Lola on October 1, 2013
48. ## Physics

A 69kg skateboarder, at rest on a frictionless surface, throws a 4.0kg rock with the velocity given by v=3(i hat)+4(jhat), where the x and y axes are both in the horizontal plane. What is the x component of the subsequent velocity of the skateboarder? WHat

asked by James on April 2, 2009
49. ## Physics

A 69kg skateboarder, at rest on a frictionless surface, throws a 4.0kg rock with the velocity given by v=3(i hat)+4(jhat), where the x and y axes are both in the horizontal plane. What is the x component of the subsequent velocity of the skateboarder? WHat

asked by Malcom on April 2, 2009
50. ## Physics

3- A 5.0 Kg block is released from point A in the figure below. It travels along the smooth surface A  E except for the part B  C where the surface is rough. Point A is 3 m above the lowest point C. The block continues in its motion up the surface

asked by Maryam on May 25, 2013
51. ## Physics

3- A 5.0 Kg block is released from point A in the figure below. It travels along the smooth surface A  E except for the part B  C where the surface is rough. Point A is 3 m above the lowest point C. The block continues in its motion up the surface

asked by Maryam on May 25, 2013
52. ## cal

Determine all values of x, (if any), at which the graph of the function has a horizontal tangent. y(x) = 6x/(x-9)^2 when i workout this problem I get this: by quotient rule: dy/dx = ( (x-9)^2 (6) - 6x(2)(x-9))/(x-9)^4 = 0 at a horizontal tangent 6(x-9)^2 -

asked by cal on October 25, 2013
53. ## Physics

A skier with a mass of 66.6 kg starts from rest and skis down an icy (frictionless) slope that has a length of 58.4 m at an angle of 29.8° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, the snow

asked by Rebecca on September 27, 2012
54. ## Geo

A plane P cuts O in a circle that has diameter 20. If the diameter of the sphere is 30, how far is the plane from O?

asked by Anonymous on March 2, 2011
55. ## Physics

If a plane is flying 40 mph with a tailwind of 6 mph, how fast is the plane going.

asked by April on June 21, 2013
56. ## physics

a place kicker must kick a football from a point 32.0 m from the goal. As a resultof the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 23.0 m/s at an angle of 53 degrees to the

asked by Olivia on October 8, 2012
57. ## pysics

;A 20-N block lifted straight upward by a hand applying a force of 20 N. If the block is lifted 1 m, who much work does the hand do?

asked by ang on February 9, 2016
58. ## maths

8 cleaners can clean an office block in 3 hours. If two cleaners are off ill,how long will it take the rest to clean the block.

asked by macy on October 1, 2018
59. ## English

The mailperson's job is to put the envelop's in every mailbox on the block Word used in correct every Block Envelop's Mailperson's

asked by Linda on May 19, 2015
60. ## Pre ALGEBRA

Which polynomial does the model represent? The model shows 1 black square block, 2 white thin blocks, 1 black thin block, 1 white small square block, 3 black small blocks. a –x³ + 2x² – 3x + 2 b. x² + x – 2 c. –x² – x + 2 d. –x² + x – 2

asked by Oscar on March 22, 2015

Part A: A cardinal (Richmondena cardinalis) of mass 4.50×10^−2 kg and a baseball of mass 0.142 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p(c) of momentum to the magnitude p(b) of the baseball's momentum? Part B: A

asked by Anonymous on November 30, 2012
62. ## Physics

Part A: A cardinal (Richmondena cardinalis) of mass 4.50×10^−2 kg and a baseball of mass 0.142 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p(c) of momentum to the magnitude p(b) of the baseball's momentum? Part B: A

asked by Mary on November 27, 2012

Part A: A cardinal (Richmondena cardinalis) of mass 4.50×10^−2 kg and a baseball of mass 0.142 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p(c) of momentum to the magnitude p(b) of the baseball's momentum? Part B: A

asked by Mary on November 28, 2012
64. ## Physics

Part A: A cardinal (Richmondena cardinalis) of mass 4.50×10^−2 kg and a baseball of mass 0.142 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p(c) of momentum to the magnitude p(b) of the baseball's momentum? Part B: A

asked by M on November 28, 2012
65. ## Mechanics A level?

A particle P lies on a smooth horizontal surface. It is acted on by two horizontal forces of magnitudes 25 N at an angle of 30 degree with the horizontal and 20 N at an angle of 45 degree with the horizontal. Both forces acted away from the particle. A

asked by Dove on April 18, 2012
66. ## Physics-- urgent

A block of mass m = 3.20kg slides from rest a distance d down a frictionless incline at angle θ = 30.0° where it runs into a spring of spring constant 425 N/m. When the block momentarily stops, it has compressed the spring by 22.0 cm. (a) What is the

asked by Anonymous on October 25, 2011
67. ## physics

A plane drops a package of emergency rations to a stranded party of explorers the plane is traveling horizontally at 40m/s at a height of 100m from the ground find where the package strikes the ground ralative to the spot where it was dropped

asked by job on June 9, 2011
68. ## Math

A plane flying at an altitude of 10,000 feet begins descending when the end of the runway is 50,000 feet from a point on the ground directly below the plane. Find the measure of the angle of descent (depression) to the nearest degree.

asked by Austin on October 29, 2012
69. ## Math - Intersection of planes

Find the vector equation of the line of intersection for the pair of planes. Plane one: x+5y-3z-8=0 Plane two: y+2z-4=0 I did half of the work but now i am stuck. the normal of the planes are not parallel and therefore a solution exists, you simultaneously

asked by Shaila on September 1, 2010
70. ## Trig

This has to do with vectors...I'm wondering if I set up the diagram correctly? A plane has a speed of 250mph and flies with a bearing of N35degE. The wind is blowing from the west at 25 mph with a heading of due east. What is the actual speed and heading

asked by Mary on April 20, 2013
71. ## Math

An airplane is flying at an altitude of 6 miles and passes directly over a radar antenna. When the plane is 10 miles away, the radar detects that the distance is changing at a rate of 240 mph. what is the speed of the plane? This is an implicit

asked by Chloe on May 13, 2013
72. ## DrBob222 physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 27.2 ° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 53.7 kg, and the coefficient of

asked by Susu on February 19, 2007
73. ## college

A car weighing 15,000 N is speeding down the highway at 90 km/h. What is its momentum?

asked by april on June 29, 2010
74. ## Science

An object weighing 90 N has a volume of 45 mL and a mass of 9.0 g. What is its density? A. 0.10 g/mL B. 0.20 g/mL •• C. 5.0 g/mL d. 10 g/mL correct me!!

asked by Kiana on February 10, 2016
75. ## physical science

A car weighing 15,000 N is speeding down the highway at 90 km/h. What is its momentum?

asked by Toni on June 12, 2011
76. ## Analytical Chemistry

What are the most common sources of error in weighing solid samples ?

asked by Neda on September 3, 2014
77. ## Chemistry

2.7g of Ag2Co3 on being heated strongly yields a residue weighing.......

asked by Devanshu on June 3, 2010
78. ## chemistry

what is the volume (in ml)of a liquid(density=2.07 g/ml)weighing 130.grams?

asked by ann on September 22, 2011
79. ## Physics

A car weighing 9800 N moves around a circular track of 70 m in 60 s. (a)

asked by Vv on November 18, 2006
80. ## Chemistry help

Why is it important for the reaction beaker to be completely dry before weighing?

asked by Anonymous on March 22, 2015
81. ## chemistry

what is the volume (in ml)of a liquid(density=2.07 g/ml)weighing 130.grams?

asked by victor on September 22, 2011
82. ## physics

When a pencil cell is released from a certain point on a inclined board,it travels a distance of 35cm on floor A before it comes to rest.when the same pencil cell is released from the same point on the same inclined board,it travels a distance of 20 cm on

asked by reem on July 27, 2014
83. ## physics

1.A cylinder rolls without slipping on a horizontal plane and then up an incline. The linear speed of the cylinder at the beginning is v. What maximal height h will the cylinder reach? 2.Helicopter of mass M holds stationary in the air fires a missile of

asked by Sandhya on May 3, 2011
84. ## physics

A bullet of mass 12 g is fired horizontally into a fixed wooden block with a speed of 20m/s. The bullet is brought to rest in the block in 0.1 seconds by a costant resistance. Calculate the (i) magnitude of the resistance (ii) distance moved by the bullet

asked by somay on May 13, 2016
85. ## phys223

What is the amplitude of the motion? Remember, at t = 0 a block with mass M = 5 kg moves with a velocity v = 2 m/s at position xo = -.33 m from the equilibrium position of the spring. The block is attached to a massless spring of spring constant k = 61.2

asked by eddy on September 30, 2013
86. ## physics - electrostatics

A charged particle of mass m of 1 kg and charge q = 2 uC is thrown from a horizontal ground at an angle teta = 45 degree with speed 20 m/s. In space a horizontal electric field E = 2 x 10^7 V/m exist. Find the range on horizontal ground of the projectile

asked by uma on April 14, 2012
87. ## Physics

The question is: A small block of ice at 0oC is subjected to 10 g of 100oC steam and melts completely. Show that the mass of the block of ice can be no more than 80 g. There were no equations in my chapter to use for this question except Q ~ change in T. I

asked by Mary on September 23, 2009
88. ## ncc

a block of mass M, resting on an incline with angle theta, is attached to a second block of mass m by a cord that passes over a smooth peg at the top of the triangular-shaped incline. all surfaces are frictionless. find the minimum and maximum values of m

asked by Anonymous on November 10, 2013
89. ## Physics

frictionless block of mass 1.65 kg is attached to an ideal spring with force constant 340 N/m . At t=0 the spring is neither stretched nor compressed and the block is moving in the negative direction at a speed of 12.7 m/s . A-Find the amplitude. B-Find

asked by Kuwaiti on January 3, 2007
90. ## Physics

A 0.340 kg block on a vertical spring with a spring constant of 4.09 × 103 N/m is pushed downward, compressing the spring 0.0700 m. When released, the block leaves the spring and travels upward vertically. The acceleration of gravity is 9.81 m/s2 . How

asked by Ally on December 10, 2014
91. ## Physics

A 0.250 kg block on a vertical spring with a spring constant of 4.09 × 103 N/m is pushed downward, compressing the spring 0.0900 m. When released, the block leaves the spring and travels upward vertically. The acceleration of gravity is 9.81 m/s2 . How

asked by Abby Miller on November 2, 2011
92. ## science

I need help with this problem:you live in the middle of a block that is square and one mile around. there is a stop sign on each corner. if your carcan only accelerate and brake at one meter per second per second, describe how you would get around the

asked by dave on October 28, 2006
93. ## iworo ajido

a tree is on one side of a river two point p and q 15metre apart are chosen on the other side of the river in a straight line with the foot of the tree on a horizontal plane.the angle of elevation of the top of the tree from p and q 32degree and 51degree

asked by hunpevi on June 9, 2015
94. ## physics

A block of mass 0.74 kg is suspended by a string which is wrapped so that it is at a radius of 0.060 m from the center of a pulley. The moment of inertia of the pulley is 0.0061 kg·m2. There is friction as the pulley turns. The block starts from rest, and

asked by John on February 11, 2014
95. ## Help - physics

A block of mass 0.74 kg is suspended by a string which is wrapped so that it is at a radius of 0.060 m from the center of a pulley. The moment of inertia of the pulley is 0.0061 kg·m2. There is friction as the pulley turns. The block starts from rest, and

asked by Danny on February 12, 2014
96. ## physics

A block of mass 0.74 kg is suspended by a string which is wrapped so that it is at a radius of 0.060 m from the center of a pulley. The moment of inertia of the pulley is 0.0061 kg·m2. There is friction as the pulley turns. The block starts from rest, and

asked by Danny on February 12, 2014
97. ## Physics

A 1.00 kg particle has the xy coordinates (-1.20 m, 0.500 m) and a 3.00 kg particle has the xy coordinates (0.600 m, -0.750 m). Both lie on a horizontal plane. At what (a) x and (b) y coordinates must you place a 1.00 kg particle such that the center of

asked by Matt on July 20, 2010

a 25gram bullet is fired upward through a .36kg block. the block goes up 17cm in the air and the bullet goes up 24m into the air. What is the initial velocity of the bullet?

asked by Sara on October 12, 2013
99. ## PHYSICS

A block weighs 15 N and is suspended from a spring that is attached to the ceiling. The spring stretches by 0.075 m from its unstrained length. By how much does the spring stretch when a 24-N block is suspended from it?

asked by Anonymous on November 4, 2015
100. ## PHYSICS

A 20N crate starting at rest slides down a rough 5.0m ramp, inclined at 25 degress with the horizontal. 20j of energy is lost due to friction. what will be the speed of the crate at the bottom of the incline? i need some help these one i don't know where

asked by magic 8 ball on October 24, 2007