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April 20, 2014

Search: A baseball (m = 145 g) traveling 35 m/s moves a fielder's glove backward 35 cm when the ball is caught. What was the average force exerted by the ball on the glove?

Number of results: 2,180

physics
a baseball has a mass of .145 kilograms. If the acceleration die to gravity is 9.8m/s, what is the weight of the baseball
Monday, December 10, 2012 at 10:00am by Darfrell

physics
Pretty silly question. The official mass of a major league baseball is 0.145 kg. No pitcher has ever thrown a baseball 200 km/h. Not even Sandy Koufax. You can derive a baseballmass from the numbers you were given by equating the kinetic energy of the baseball to the work done...
Friday, November 27, 2009 at 10:33pm by drwls

physics
What is the change in kinetic energy of a baseball as it accelerates from rest to 45.0 m/s? The mass of a baseball is 145 grams
Monday, March 7, 2011 at 4:48pm by Anonymous

physics
A 0.145 kg baseball is pitched at 42 m/s. The batter hits it horizontally to the pitcher at 58 m/s. GIVEN: m = 0.145 kg v = 42 m/s batter v = 58 m/s a. Find the change in momentum of the ball. p = mv p = (0.145)(42) p = 6.09 --> What velocity would I use? Would i use the ...
Friday, December 25, 2009 at 8:37pm by Heart

physics
What is the change in kinetic energy of a baseball as it accelerates from rest to 45.0 m/s? The mass of a baseball is 145 grams. answer in joules
Monday, March 7, 2011 at 4:48pm by dina

Physice
I got all but this problem, I A 0.145-kg baseball is pitched at 42.0 m/s. The batter hits it horizontally to the pitcher at 58 m/s. A. Find change in momentum? Is it =.145*58-(-.145*42)=1.45-kg m/s? B. If bat and ball are in contact for 4.6 x 10-4 s, what is average force ...
Sunday, February 14, 2010 at 1:31pm by Nate

Physics
I got all but this problem. A 0.145-kg baseball is pitched at 42.0 m/s. The batter hits it horizontally to the pitcher at 58 m/s. A. Find change in momentum? Is it =.145*58-(-.145*42)=1.45-kg m/s? B. If bat and ball are in contact for 4.6 x 10-4 s, what is average force ...
Sunday, February 14, 2010 at 6:23pm by Nate

physics
If an 75-kg baseball pitcher wearing frictionless roller skates picks up a 0.145-kg baseball and pitches it toward the south at 40 m/s, how fast will he begin moving toward the north?
Thursday, March 31, 2011 at 10:44pm by olga

math
25(4)+ 15(3) = 145 100 + 45 = 145 145 = 145 Yes
Monday, November 4, 2013 at 6:29pm by Kuai

Physics w/ Calc
A baseball approaches home plate at a speed of 43.0 m/s, moving horizontally just before being hit by a bat. The batter hits a pop-up such that after hitting the bat, the baseball is moving at 54.0 m/s straight up. The ball has a mass of 145 g and is in contact with the bat ...
Sunday, October 16, 2011 at 8:08pm by Lauren

physics
A baseball player hits a baseball (m = 0.145 kg) The ball is initially traveling horizontally with speed of 36 m/s. The batter hits a fly ball as shown, with a speed vf = 54 m/s. (a) What is the magnitude and direction of the impulse imparted to the ball? (b) If the ball (m = ...
Tuesday, October 5, 2010 at 11:40pm by anna

math
So the number has to be a multiple of 5 , between 45 and 200 when divided by 8 there is a remainder of 1 so it could be 49 57 65 73 81 89 97 105... 145 .... 185 when divided by 12 , there is a remainder of 1 so it could be 49 61 73 85 97 109 121 133 145 ... 205 the common ...
Wednesday, August 22, 2012 at 10:53pm by Reiny

Physics
Now assume that the pitcher in Part D throws a 0.145-kg baseball parallel to the ground with a speed of 32 m/s in the +x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line. What is the ball's velocity just after ...
Sunday, October 24, 2010 at 5:07pm by Eden

Chemistry
Calculate the de Broglie wavelength, in nanometers, associated with a 145 {\rm g} baseball traveling at a speed of 162km/h
Monday, November 26, 2012 at 12:25pm by Chironjit

Math
N '(t) = 2e-0.02t N = (2/-.02) e^-.02t + c N = -100 e^-.02t + c when t=0 , N = 45 45 = -100(1) + c c = 145 N = -100 e^-.02t + 145 testing: if t = 0 N = -100 e^0 +145 = 45 , good if t = 5 N = -100 e^-.1 + 145 = -90.5 + 145 = 54.5 , improving if t = 20 N = 78 , looks logical, ...
Wednesday, April 9, 2014 at 10:12pm by Reiny

college physics
Now assume that the pitcher throws a 0.145 kg baseball parallel to the ground with a speed of 32 m/s in the +x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line. What is the ball's velocity just after leaving the bat ...
Thursday, March 11, 2010 at 9:02am by Anonymous

science math practice
a pitcher throws a 0.145-kg baseball at a velocity of 30.0 m/s. how much kinetic energy does the ball have?
Thursday, March 8, 2012 at 4:52pm by celeste

science math practice
a pitcher throws a 0.145-kg baseball at a velocity of 30.0 m/s. how much kinetic energy does the ball have?
Thursday, March 8, 2012 at 4:52pm by celeste

physics
as a baseball player strikes the ball with his batt the 1kg bat applies an average force of 250N on the .15kg baseball for .2 seconds. A) what is the force applied by the baseball on the bat? what is the acceleration of the baseball? C) what is the speed of the baseball at the...
Thursday, October 20, 2011 at 9:59pm by Ali

physics
As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 its mass is 0.145. A) What is the baseballs acceleration in m/s^2 and in g's? B) What is the size of force acting on it?
Tuesday, June 21, 2011 at 9:48am by Ralph

Physics
A regulation baseball has mass 145 g and diameter 22.86 cm. Will this ball float or sink in water? Vsphere = 4 3π⋅r3
Saturday, November 30, 2013 at 5:17pm by Angie

Physics
A regulation baseball has mass 145 g and diameter 22.86 cm. Will this ball float or sink in water? Vsphere = 4 3π⋅r3
Sunday, December 1, 2013 at 8:22pm by Angie Need Help ASAP

math
HCF means highest (or greatest) common factor. Numbers that have a multiple of 2175 are 725, 1450, and 2175, and these factors of 725: 5, 25, 29, 145, 435 and 725. The "other number" must be 145 or a multiple of 145. If it were 435, 435/145 = 3 If it were 725, 725/145 = 5 Both...
Sunday, June 21, 2009 at 4:44am by drwls

physics
A baseball player hits the ball at a speed of 20.1 m/s and an angle of 30 degrees. What is the baseball's horizontal velocity? What is the baseball's vertical velocity? How long does it take the baseball to get 28m in front of home plate?
Sunday, September 11, 2011 at 4:22pm by brittany

Physics
The velocity of the baseball as it leaves the bat is 38.2 m/s. Determine (a) the maximum height the baseball reaches, and (b) the total timke the baseball is in the air. Assume the baseball is caught at the same height above the ground as it was hit.
Tuesday, November 27, 2012 at 11:34pm by Anonymous

physics
A baseball pitcher throws a baseball horizontally at a linear speed of 41.3 m/s. Before being caught, the baseball travels a horizontal distance of 15.4 m and rotates through an angle of 52.7 rad. The baseball has a radius of 3.74 cm and is rotating about an axis as it travels...
Wednesday, April 9, 2014 at 12:28am by Anonymous

physics
A baseball player hits the ball at a speed of 20.1 m/s and an angle of 30 degrees. What is the baseball's horizontal velocity? 1m/s What is the baseball's vertical velocity? 2m/s How long does it take the baseball to get 28m in front of home plate? 3 seconds
Sunday, September 11, 2011 at 3:32pm by brittany

Physics
compare the collision of a baseball and bat with the collision of a baseball and a fielder's glove when the baseball is caught. During which collision is there a greater momentum change for the baseball?
Tuesday, January 22, 2013 at 2:41pm by Dan

math
right now: Morris --> 40/149 = .268456 = .268 Kim------> 37/141 = .262411 = .262 for Kim make a grid with extra hits on top and extra at-bats on the side ........extra hits...... .....0......1......2......3....4 0..37/141 1..37/142 38/142 2..37/143 38/143 39/143 3..37/...
Monday, January 7, 2008 at 10:03pm by Reiny

PHYSICS
A baseball of mass 148g is travelling at 35.0m/s [E] collides with a baseball bat. the collision lasts for 1.10ms. After the collision, the baseball travels at 52m/s [W]. What is the force of the bat on the baseball
Friday, April 5, 2013 at 4:07pm by R

3rd Grade Math
Marlon has 4 baseball cards, Jake has 4 baseball cards, and Sam has 3 baseball cards. Can you write a multiplication sentence to find how many baseball cards they have altogether? Explain.
Tuesday, February 2, 2010 at 12:16am by Kainalu Mauga

Math
Marlon has 4 baseball cards, Jake has 4 baseball cards and Sam has 3 baseball cards. Can you write a multiplication sentence to find how many baseball cards they have altogether? Explain.
Tuesday, November 12, 2013 at 4:51pm by Tammy

math
how would I write 145% as a fraction? it would be 145/1000 could you by any chance help me with my question it is between luke and dogauls question thanks Julie is incorrect 145/100 reduce to 29/20
Thursday, May 31, 2007 at 8:32pm by Amber

trig
tangent = opposite / adjacent tan 24.8 = x / 145 x = 145 * tan 24.8 x = 145 * 0.462065 x = 66.9994 x = aprox. 67
Tuesday, February 14, 2012 at 8:09am by Anonymous

math
145.623 to nearest tenth = 145.6 145.653 to nearest tenth = 145.7
Tuesday, October 19, 2010 at 3:12pm by PsyDAG

Physics
A baseball has a mass of .145 kilograms. A pitcher's fastball travels at 42 m/s. How much force is applied to the ball if the catcher stops the ball in .05 sec?
Tuesday, October 18, 2011 at 1:28pm by Yuki

SS
The following natural resources are used to make a regular pencil. wood, graphite, rubber, metal Which of the following products could also be made using the above resources? baseball baseball jersey baseball glove baseball bat (my choice)
Friday, September 6, 2013 at 12:17pm by Anonymous

Physics
A baseball player throws a baseball up at 24.3 m/s. How long must he wait before he can catch the baseball on its way down?
Thursday, November 15, 2012 at 8:28pm by Chris

Physics
A 0.03-kg bullet is fired vertically at 200m/s into a 0.15-kg baseball that is initially at rest. The bullet lodges in the baseball and, after the collision, the baseball/bullet rise to a height of 37m. (a). What was the speed of the baseball/bullet right after the collision...
Thursday, February 14, 2013 at 1:48am by Annie

Physics
A 0.145-kg baseball traveling 35.0 m/s strikes the catcher's mitt which, in bring the ball to rest, recoils backward 11.0 cm. What was the average force applied by the ball on the glove?
Friday, October 10, 2008 at 9:51pm by Steve

physics
A coach is hitting pop flies to the outfielders. If the baseball (mass = 145 g) stays in contact with the bat for 0.08 s and leaves the bat with a speed of 75 m/s, what is the average force acting on the ball?
Saturday, February 11, 2012 at 2:03pm by brett

math
Clearly the number must be a multiple of 5, so it could be 45 50 55 60 65 ...145 ... 200 when divided by 12, the remainder is 1, so it could be 49 61 73 85 97 109 121 133 145 .... 193 when divided by 8, the remainder is 1, so it could be 49 57 65 73 81 89 97105 113 121 129 137...
Wednesday, August 21, 2013 at 8:03pm by Reiny

math
let there be: c coins t 20 coins f 50 coins 7/8 c = t 1/8 c = f so, t = 7f 72.50 is 145 of the 50 coins (f + t) - 145 - (5/7 t) = 2/7 (f+t) since t = 7f, f + 7f - 145 - 5f = 2/7 * 8f f = 203 so, t = 1421 and 1624 coins in all check: 1624 - 145 - 5/7 (1421) = 1624 - 145 - ...
Thursday, April 19, 2012 at 12:03am by Steve

algebra
A baseball player hits a baseball into the outfield. The following equation models the ball's path. If not caught, when will the baseball land? Round to the nearest tenth second. h = -16t^2 + 50t + 4
Thursday, October 20, 2011 at 11:17am by tracy

phy
A baseball (m = 145 g) traveling 45 m/s moves a fielder's glove backward 15 cm when the ball is caught. What was the average force exerted by the ball on the glove? find Magnitude
Sunday, September 26, 2010 at 8:52am by mas

phy
A baseball (m = 145 g) traveling 45 m/s moves a fielder's glove backward 15 cm when the ball is caught. What was the average force exerted by the ball on the glove? find Magnitude
Sunday, September 26, 2010 at 9:15am by mas

physics
A baseball of mass 0.145 kg approaches a bat at 40.0 m/s. After it is hit, the ball leaves the bat at 50.0 m/s directly back. Find the impulse of the bat on the ball.
Thursday, January 23, 2014 at 10:07am by Mackenzie

Physics
Every once in a while a bird will get hit by a baseball during a baseball game. The longest home runs in baseball land about 500 feet (which is 152.4 meters) from home plate. If these balls leave the bat at a 45 degree angle to maximize their distance, what is the minimum safe...
Tuesday, March 12, 2013 at 10:18pm by John

Physics
Every once in a while a bird will get hit by a baseball during a baseball game. The longest home runs in baseball land about 500 feet (which is 152.4 meters) from home plate. If these balls leave the bat at a 45 degree angle to maximize their distance, what is the minimum safe...
Wednesday, March 27, 2013 at 11:55pm by Dan

Gen physics
A 55.0 kg high school baseball pitcher is holding a 149 g baseball as he slides horizontally on a frictionless surface with a velocity of +2.15 m/s, relative to the surface. He then throws the baseball with a velocity of +46.7 m/s relative to the surface. What is the players ...
Tuesday, July 16, 2013 at 4:59pm by No clue on this one

chemistry
so for uranium would it be protons 92 electrons 145 neutrons 145
Thursday, December 2, 2010 at 8:41pm by monique n

Alegra 2
A baseball is hit at a point of 3 feet above ground at a velocity of 100 feet per second and an angle of 45 degrees. The path of the baseball is h(x)= -0.0032(x-156.25)squared+87, where x and h(x) are measured in feet. A. what is the baseball's maximium height? B. will the ...
Sunday, October 23, 2011 at 1:30pm by Emily

Maths
2h 25 = 145 minutes , so 30/145 = .2068.. or appr 21%
Thursday, October 4, 2012 at 8:26am by Reiny

Physics
"if u could do this physics problem thatd be super. A coach is hitting pop flies to the outfielders. If the baseball (m = 145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 50 m/s, what is the average force acting on the ball?"
Friday, February 26, 2010 at 9:30am by Pat

English
1. I will go to a baseball game. 2. I like going to a baseball game. 2-2. I like going to baseball games. 2-3. I like going to the baseball game. 3. I like watching baseball games. 4. I will go to the baseball stadium to play baseball against the Tigers. 5. I will play ...
Monday, May 20, 2013 at 9:42pm by rfvv

physics I'M STUCK PZL HELP
because they ask you for half of the time, so in your case in 145 it gets burned 5% in 145 seconds
Sunday, December 8, 2013 at 12:30pm by Teresa

physics
what is the distance between centers of a baseball of mass 0.145 kg and a bowling ball of mass 5.5 kg, such that the gravitational force between them is 1.3 * 10^6N
Tuesday, October 9, 2012 at 6:20am by nana

Precalc
Fred hits a baseball 3 ft above ground at a velocity of 100 ft per sec and at an Angle of 45 degrees with respect to level ground. The path of the baseball is given by the function f(x)=-0.0032x^2+x+3 where f(x) is the height of the baseball in ft and x is the distance from ...
Sunday, November 7, 2010 at 9:03pm by Jackk

physics
convert 145 km/h into m/s 145 1000 3600= 40.3 then use this equation: W=Fd
Wednesday, March 3, 2010 at 2:29pm by Diamond

MATH
i will do the first, you do the second 1. set y = 0 0 = -0.00545x^2 + 1.145x 0.00545x^2 - 1.145x = 0 x(0.00545x - 1.145) = 0 x=0 (at the start) or x = 1.145/0.00545 = 210.1 2 max of y would be at the vertex of the parabola. the x of the vertex is -b/2a = -1.145/(2(-0.00454...
Tuesday, December 7, 2010 at 8:40pm by Reiny

vector physics
Using the standard orthogonal unit vectors and ĵ. Momentum of the system: 0.045*9.0 - 0.145*7 ĵ kg∙m/s Magnitude: √((0.045*9.0)^2 + (0.145*7)^2) kg∙m/s Direction: angle measured off x-axis -arctan((0.145*7)/(0.045*9.0))
Monday, September 23, 2013 at 12:08am by Graham

Physics - Center of Mass
m=∫ρdx =∫(145+14.2x) dx = = ∫145dx+∫14.2xdx = =145x + 14.2x²/2= =1455 + 14.225/2 =902.5 g. Calculate the integral ∫ρxdx = =∫(145+14.2x) x dx = = ∫145xdx+∫14.2x²dx = =145x²/2 + 14.2x³...
Saturday, June 16, 2012 at 7:43pm by Elena

physics
A baseball player puts a baseball on a batting tee. The baseball bat is able to deliver 400,000 W of power and is in contact with the ball for 0.70 ms and a distance of 1.4 cm. the mass of the ball is 145g. What is the average acceleration?
Wednesday, November 7, 2012 at 10:01pm by S

Physics
A baseball is thrown with an initial velocity of 37 m/s at an angle of 26 degrees above horizontal, from the top of the building which is 72 meters high. A. What will be the horizontal and vertical components of this baseballs velocity? B. what will be the vertical velocity of...
Wednesday, January 23, 2013 at 9:42pm by A

Physics
An outfielder throws a 0.145 kg baseball to the shortstop with a speed of 30 m/s at an angle of 20 degrees above the horizontal. How far does the ball travel? (Assume the shortstop catches it at about the same height that the outfielder throws it.)
Thursday, September 27, 2012 at 9:07pm by Nick

Math
145 / 1 000 = 0.145 = 15%
Saturday, October 16, 2010 at 9:39am by Ms. Sue

Algebra 2
A baseball player swings and hits a pop fly straight up in the air to the catcher. The height of the baseball in meters t seconds after it is hit is given by a quadratic function h(t) = −5t^2 + 10t + 1. What is the maximum height of the baseball?
Tuesday, May 1, 2012 at 8:37pm by Alex

Algebra 2
A baseball player swings and hits a pop fly straight up in the air to the catcher. The height of the baseball in meters t seconds after it is hit is given by a quadratic function h(t) = −4.9t^2 + 9.8t + 1. What is the maximum height of the baseball?
Tuesday, May 1, 2012 at 8:37pm by Anonymous

math
A baseball player swings and hits a pop fly straight up in the air to the catcher. The height of the baseball in meters t seconds after it is hit is given by a quadratic function h(t) = −4.9t^2 + 9.8t + 1. What is the maximum height of the baseball?
Sunday, April 14, 2013 at 10:58pm by Anonymous

physics
A regulation 145 g baseball can be hit at speeds of 100 mph. If a line drive is hit essentially horizontally at this speed and is caught by a 65 kg player who has leapt directly upward into the air, what horizontal speed (in cm/s) does he acquire by catching the ball?
Wednesday, October 28, 2009 at 6:13pm by Student1

college writing
Circular thinking here = "I like baseball because it [baseball] ... teaches me about [baseball]." ?? I see no parallel construction problems nor any fragment, but I do see that error in thinking.
Friday, August 12, 2011 at 9:17pm by Writeacher

Physics
A baseball of mass 0.13 kg, moving horizontally with a momentum of 4 kgPm/s, is struck head-on by a baseball bat with an impulse of 10 NPs. What is the speed of the baseball after it is struck? _______m/s
Sunday, October 20, 2013 at 7:38pm by anonymous

Physics
I don't see what 1/4 kg of water has to do with a baseball, but you did the problem correctly. The specific heat of a baseball is different from that of water, and its mass is 1/7 kg, so what you have calculated in NOT the velocity needed to raise the baseball 0.2 degrees. It ...
Monday, February 15, 2010 at 7:26pm by drwls

Algebra
A baseball player hits a baseball into the air with an initial vertical velocity of 48 feet per second from a height of 3 feet. 8. Write an equation that gives the baseballs height as a function of the time (in seconds) after it is hit. 9. After how many seconds does the ...
Sunday, March 31, 2013 at 6:18pm by Elizabeth

Chemistry
This question has been bugging me for a long time. A rock contains a Pb-206 to U-238 mass ratio of .145 to 1.00. Assuming that it did not contain any Pb-206 at the beginning of its formation, determine its age. I assume from the other problems in my book that the 1/2 life is 4...
Saturday, February 23, 2013 at 10:39am by Nancy

Calculus
No. Solve for t in terms of f, and then switch variables to write it in f^-1(t) form. Is the 1/3 a multiplier of (t+145)^2, or is (t+145)^2 part of the denominator? You need to be clearer about that, using extra paretheses if necessary.
Sunday, August 17, 2008 at 10:34pm by drwls

Math-- PLEASE CHECK
234 - 145 3/4 233 4/4 -145 3/4 ___________ 88 1/4 or am I wrong? How do I solve this if I am wrong? Thank you!! you're correct
Thursday, February 22, 2007 at 3:43pm by Candace

math,percentage
2h 25 m = 120 = 25 = 145 minutes. % reading newspapers = (30/145)*100 = ?%
Monday, February 13, 2012 at 12:18am by DrBob222

Calculus
Ke = (1/2) m v^2 = (1/2) m (145^2) pe = m g h where g = 32.2 in ft/seconds units 32.2 m h = (1/2) m (145^2) h = 326 feet
Friday, July 22, 2011 at 9:00pm by Damon

math
I assume BE is the height of the trapezoid. then AE=8 and by Pythagoras AB^2 = 64+81 = 145 AB = √145 = 12.042
Saturday, April 11, 2009 at 11:16pm by Reiny

Algebra I
a baseball is hit into the air and its height h in feet after t seconds is given by h(t) = -16t62 + 64t +2 A. What is the height of the baseball when it is hit? B. After, how many seconds does the baseball reach it's maximum height? C. Determine the maximum height of the ...
Thursday, February 4, 2010 at 10:27am by jazmine M.

Physics
a 0.145 kg baseball pitched at 39.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s.if the contact time between bat and ball is 0000.3 s,calculate the average force between the ball and bat during contact.
Monday, November 16, 2009 at 5:42pm by Anonymous

physics
Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices. Rank these from easiest ...
Monday, October 15, 2012 at 7:34pm by lib

physics
Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices. Rank these from easiest ...
Monday, October 15, 2012 at 7:40pm by lib

physics
Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices. Rank these from easiest ...
Monday, October 15, 2012 at 7:40pm by lib

math
is there a common multipple for 116, and 145? Can 116/145 be reduced or simplified? I have been agonizing for an hour over this. Please show me the answer.
Thursday, July 29, 2010 at 12:35am by barb

physics
Since there are no non-conservative forces involved in this scenario, you can use the principle of the conservation of momentum. Set up the momentum of the baseball player equal to the momentum of the baseball: (75kg)(vB)=(0.145kg)(40m/s). The velocity of the baseball player ...
Thursday, March 31, 2011 at 10:44pm by Seth

physics
mass * (velocity change) = impulse The velocity changes from +3.8 to -5.2 so the velocity change is 9.0 m/s. (The direction change is important) Mass = 0.7 N-s/9.0 m/s = 0.0778 kg = 77.8 g (The official mass of a Major League baseball is 145 g, so they did a poor job dreaming ...
Wednesday, July 2, 2008 at 10:13pm by drwls

physics
A 0.145 kg baseball pitched at 35.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. If the contact time between bat and ball is 1.00*10 to the -3, calculate the average force between the ball and bat during contact.
Monday, December 19, 2011 at 3:19pm by Amelia

Chemistry
I assume 28.317 is the conversion factor for cubic feet to L and I assume 115 ft^3 is the volume of the inside of the car. 28.317 l x 115ft^3 = 3256 l at a standard temperature (0 C, 40 F) 3256 l x 1mole N2/22.44 l = 145.4 moles N2 Number of moles = 145.4 moles N2 You are ok ...
Friday, May 24, 2013 at 3:47pm by DrBob222

Physics
I'm not sure how to do this problem A 145-g baseball is droppexc from a tree 12.0 m above the ground. (a) Wtih what speed would it hit the ground if air resistance could be ignored? (b) If it actually hits the ground with a speed of 8.00 s^-1 m, what is the average force of ...
Thursday, September 24, 2009 at 9:16am by Physics

college
A baseball pitcher throws a baseball with a speed of 38 . In throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 , from behind the body to the point where it is released Estimate the average acceleration of the ball during the throwing ...
Monday, September 20, 2010 at 10:46pm by Anonymous

Chemistry
I take it that this is 0.85% w/v. If so, that means 0.85 g NaCl per 100 mL solution. Convert 0.85 g NaCl to moles. moles = grams/molar mass = 0.85/58.5 (you may want to refine this figures) = 0.0145 moles/100 mL which is 0.145 moles/L soln which is 0.145 M or 0.145 N.
Wednesday, May 11, 2011 at 1:44pm by DrBob222

Physics
A 0.145 kg baseball pitched at 38.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 55.0 m/s. If the contact time between bat and ball is 3.4010−3 s, calculate the average force between the ball and bat during contact.
Monday, November 8, 2010 at 3:55am by brian

Physics
A 0.145 kg baseball pitched at 37.5 m/s is hit on a horizontal line drive straight back toward the pitcher at 48.0 m/s. If the contact time between bat and ball is 3.5010^−3 s, calculate the average force between the ball and bat during contact.
Wednesday, November 10, 2010 at 3:13am by Linda

physic
a baseball pitcher throws a baseball with a speed of 4m/s.Estimate the average acceleration of the ball during the throwing motion.In throwing the baseball,the pitcher accelerates the ball through a displacement of about 3.5m,from behind the body to the point where it is ...
Thursday, June 23, 2011 at 1:33am by noah

PHYSICS IMP PLS
it's simple 10%/2 because 145=290/2 and it said "assume the burn rate is constant" so V=Vex*ln(1/(1-%/2)) for your case V=2000*ln(1/(1-0.05)) a=V/145
Sunday, December 8, 2013 at 1:58am by Anon

h.s. physics
a baseball pitcher throws a baseball with a speed of 38m/s. estimate the average acceleration of the ball during the throwing motion,. in throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 m from behind the body to hthe point where it ...
Sunday, April 15, 2012 at 11:44am by JACK

h.s physics
a baseball pitcher throws a baseball with a speed of 38m/s. estimate the average acceleration of the ball during the throwing motion,. in throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 m from behind the body to hthe point where it ...
Sunday, April 15, 2012 at 2:57pm by JACK

physics help !
a baseball pitcher throws a baseball with a speed of 38m/s. estimate the average acceleration of the ball during the throwing motion,. in throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 m from behind the body to hthe point where it ...
Sunday, April 15, 2012 at 4:34pm by JACK 33

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