Sunday

December 21, 2014

December 21, 2014

Number of results: 35,873

**physics**

During a neighborhood baseball game in a vacant lot, a particularly wild hit sends a 0.144-kg baseball crashing through the pane of a second-floor window in a nearby building. The ball strikes the glass at 14.9 m / s, shatters the glass as it passes through, and leaves the ...
*November 4, 2014 by nic*

**physics**

You and a friend stand on a snow-covered roof. You both throw snowballs from an elevation of 18 m with the same initial speed of 11 m/s, but in different directions. You through your snowball downward, at 40° below the horizontal; your friend throws her snowball upward, at 40...
*September 28, 2014 by Dina*

**College Physics**

Two balls have masses 44 kg and 86 kg. The 44 kg ball has an initial velocity of 80 m/s (to the right) along a line joining the two balls and the 86 kg ball is at rest. The 86 kg ball has initial velocity of −24 m/s. The two balls make a head-on elastic collision with ...
*August 9, 2011 by Walsh*

**Physics**

A ball is thrown upward and allow to fall under the influence of gravity. We will ignore the effects of air resistance. We consider three times: Time A, when the ball is first thrown upward, Time B when the ball reaches the peak, and Time C when the ball hits the ground. Rank ...
*June 18, 2011 by Casey *

**Physics**

A tennis ball is dropped from 1.80 m above the ground. It rebounds to a height of 1.00 m (assume down to be negative). (a) With what velocity does it hit the ground? (b) With what velocity does it leave the ground? (c) If the tennis ball were in contact with the ground for 0....
*October 15, 2012 by Confused*

**physics**

A 8.5-kg bowling ball is rolling down the alley with a velocity of 3.5 m/s. For each impulse, a and b, as shown below, find the resulting speed and direction of motion of the bowling ball.
*December 6, 2010 by lets go*

**physics**

A cannon tilted up at a 26.0 degree angle fires a cannon ball at 78.0 m/s from atop a 12.0 m-high fortress wall. What is the ball's impact speed on the ground below?
*March 21, 2011 by duke*

**physics**

A 0.5 kg football is kicked with a speed of 15 m/s. A goalkeeper catches the ball and brings it to rest in 0.02 seconds. What is the impulse delivered to the ball and the average force exerted on the goalkeeper?
*November 9, 2011 by Anonymous*

**physics**

A ball is thrown from a cliff upward with a speed of 20 m/s, the angle is 33 degrees and the ball hits the ground 9.2 seconds later, how high is the cliff to the nearest meter?
*January 19, 2012 by Jason*

**Physics**

A cannon tilted up at a 34.0^\circ angle fires a cannon ball at 69.0 m/s from atop a 23.0 m-high fortress wall. What is the ball's impact speed on the ground below?
*March 29, 2012 by Cody*

**Physics**

Two balls have masses 44 kg and 86 kg. The 44 kg ball has an initial velocity of 80 m/s (to the right) along a line joining the two balls and the 86 kg ball is at rest. The 86 kg ball has initial velocity of −24 m/s. The two balls make a head-on elastic collision with ...
*August 9, 2011 by Eddy*

**physics**

a 65kg student holding a 5 kg ball is at rest on ice. if the student throws the ball at 3m/s to the left, what is her velocity after throwing the ball
*January 13, 2011 by bebe*

**physics**

a 65kg student holding a 5 kg ball is at rest on ice. if the student throws the ball at 3m/s to the left, what is her velocity after throwing the ball
*January 13, 2011 by bebe*

**Physics**

A ball is thrown upward from the edge of a platform 15 m above the ground. The ball rises 12 m then falls to the ground. What is the vertical displacement of the ball?
*September 21, 2011 by Alexis*

**physics**

Rita accelerates a 0.40-kg ball from rest to 9.0 m/s during the 0.075 s in which her foot is in contact with the ball. What average force does she apply to the ball during the kick? A) 48 N B) 72 N C) 24 N D) 60 N E) 76 N
*June 14, 2010 by anonymous*

**Science**

Tracy ties a ball to a string and starts to swing the ball around her head what forces are acting on the ball what happens if the string breaks
*May 19, 2011 by Joann*

**Physics**

An upward force of 35 N is applied via a string to lift a ball with a mass of 2.1 kg. (a) What is the net force acting upon the ball? (b) What is the acceleration of the ball?
*February 20, 2012 by Mina*

**Physics**

A ball rolling with initial velocity of 40m/s(W) undergoes an acceleration of 5.0m/s^2(N) for a period of 6.0seconds. (A) what is the final velocity of the ball? (B) what is the displacement of the ball in the 6.0 sec
*October 7, 2014 by Alan*

**Physics**

A ball rolling with initial velocity of 40m/s(W) undergoes an acceleration of 5.0m/s^2(N) for a period of 6.0seconds. (A) what is the final velocity of the ball? (B) what is the displacement of the ball in the 6.0 sec
*October 7, 2014 by Alan*

**Physics**

A ball is launched with a velocity of 10 m/s at an angle of 50.0 degrees to the horizontal. The launch point is at the base of a ramp of horizontal length 6.00 m and 3.60 m high. A plateau is located at the top of the ramp. a) Does the ball land on the ramp or plateau? Justify...
*December 18, 2006 by Armando*

**Physics**

From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.00 m/s and angle of 20.0 degrees below the horizontal. It strikes the ground 3.00 s later. (a) If the base of the building is taken to be the origin of the ...
*September 21, 2009 by Vico*

**physics**

1)when a person stands on bathroom scales the scale reads 60 kg. Suppose the person stands on the same scales when in an elevator (lift). the elevator accelerates upwards at 2m/s2. Determine the new reading on the scale. 2)When a golfer strikes a golf ball it is in contact ...
*March 15, 2014 by waslat *

**Physics**

1. Determine the specific heat of a certain metal if a 450-g sample of it loses 34,500 joules of heat as its temperature drops by 97degC. 2. The temperature of a 55-g sample of a certain metal drops by 113degC as it losses 3,500 J of heat. What is the specific heat of the ...
*November 19, 2014 by Hershey*

**Physics**

1. Determine the specific heat of a certain metal if a 450-g sample of it loses 34,500 joules of heat as its temperature drops by 97degC. 2. The temperature of a 55-g sample of a certain metal drops by 113degC as it losses 3,500 J of heat. What is the specific heat of the ...
*November 21, 2014 by Hershey*

**Physics HELP!**

A solid, horizontal cylinder of mass 11.0 kg and radius 1.70 m rotates with an angular speed of 5.10 rad/s about a fixed vertical axis through its center. A 1.21 kg piece of putty is dropped vertically onto the cylinder at a point 0.600 m from the center of rotation and sticks...
*November 6, 2012 by Mia*

**physics**

A solid, horizontal cylinder of mass 12.0 kg and radius 2.30 m rotates with an angular speed of 6.70 rad/s about a fixed vertical axis through its center. A 1.60 kg piece of putty is dropped vertically onto the cylinder at a point 0.600 m from the center of rotation and sticks...
*November 11, 2012 by Anonymous*

**Physics**

A juggler performs in a room with a ceiling 2m abouve hand level. A. what is the maximum upward speed she can give the ball without hitting the celing. B. what is the time spent in the air before the ball is caught?
*October 22, 2009 by Anonymous*

**physics**

A baseball is thrown at an angle of 23◦ relative to the ground at a speed of 22.3 m/s. The ball is caught 36.4649 m from the thrower. The acceleration due to gravity is 9.81 m/s2 . How long is it in the air? How high is the tallest spot in the ball’s path?
*November 26, 2010 by john*

**Physics(Please check)**

A 5-kg ball is thrown straight up in the air with an initial speed of 24m/s. After its release and before it hits the ground when is the ball in free fall? My answer is at all times. Is this correct? Thank you.
*May 16, 2012 by Hannah*

**physics**

consider a solid metal ball with radius r and charge q. what is the electric field intensity at the center, anywhere inside the ball and anywhere outside the ball?
*July 1, 2010 by alex*

**Physics**

A 4.0 kg mud ball drops from rest at a height of 12 m. If the impact between the ball and the ground lasts 0.30 s, what is the average net force exerted by the ball on the ground?
*December 29, 2011 by Anonymous*

**physics**

A ramp causes a ball to accelerate at - 4 m/s the ball is rolled up the ramp at 13 m/s find the ball velocity after rolling for 6 seconds you must show your work
*May 3, 2012 by lisa*

**physics**

A 0.405 soccer ball is initially moving at 2.05. A soccer player kicks the ball, exerting a constant 40.5 force in the same direction as the ball's motion.
*March 27, 2013 by Anonymous*

**mechanics**

Two pool balls, each of mass 0.2kg, collide as shown in the figure above. Before the collision, the black ball’s velocity makes an angle of 30∘ with the horizontal line. After the collision, the white ball’s velocity makes an angle of 60∘ with the vertical line. ...
*July 6, 2014 by juanpro*

**physics**

aball is thrown vertically upward with a speed v from a height h above the ground. find the time taken for the ball to strike the ground.(consider acceleration due to gravity =g)
*June 12, 2011 by pavatharani*

**physics**

A baseball is hit with a speed of 27 meters per second at an angle of 45 degrees. It lands on the flat roof of a 13 meter tall building. If the ball was hit when it was 1 meter above the ground, what horizontal distance does it travel before it lands on the building? A long ...
*November 23, 2011 by Bart*

**physics**

for both of these object system1: earth and ball if a ball is falling down, is the work done on it positive since force and displacement are in the same direction. system 2: earth and basket a basket is tied to a rope and is dropped then come to a full stop, then is the work ...
*May 25, 2010 by eng*

**physics**

ajuggler tosses a ball up in the air with initial speed u. at the instant it reaches the maximum height H, he tosses a second ball with the same initial speed the two balls collide at what height
*September 9, 2012 by sahana gr *

**physics**

: A 50kg wooden crate rests on a horizontal concrete floor. The coefficient of friction is u=0.7. What is the magnitude of the frictional force?
*September 15, 2010 by Tanner*

**physics**

The drawing shows a steel ball rolling along a flat surface at constant velocity from point A to point B. A magnet exerts an attractive force on the ball only for the short time that passes as the ball rolls past point B. Which one of the following trajectories does the ball ...
*June 8, 2014 by Sam*

**physics**

he drawing shows a steel ball rolling along a flat surface at constant velocity from point A to point B. A magnet exerts an attractive force on the ball only for the short time that passes as the ball rolls past point B. Which one of the following trajectories does the ball ...
*June 8, 2014 by Sam*

**physics**

Two pith balls below each have a mass of 5.0 g and equal charge. One pith ball is suspended by an insulating thread. The other is brought to x = 4.0 cm from the suspended ball. The suspended ball is now hanging with the thread forming an angle of 30.0° with the vertical. The ...
*February 8, 2010 by Adam*

**Physics**

A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.81 m/s at an angle of 34.0° with respect to the original line of motion. Assuming an elastic collision (and ignoring friction and rotational motion), ...
*March 14, 2011 by John*

**Physics**

A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.81 m/s at an angle of 34.0° with respect to the original line of motion. Assuming an elastic collision (and ignoring friction and rotational motion), ...
*March 14, 2011 by John*

**phyics**

A ball is placed at the top of a hill of incline 60.0 degrees. The ball is allowed to roll for 12.0 seconds. How far will the ball roll during this period? Neglect friction.
*December 18, 2010 by lola*

**physics**

A batter hits a fly ball which leaves the bat 0.90 m above the ground at an angle of 61° with an initial speed of 29 m/s heading toward centerfield. Ignore air resistance. (a) How far from home plate would the ball land if not caught? (b) The ball is caught by the ...
*December 2, 2009 by bob*

**algebra 2 **

a baseball player hits a fly ball that is caught about 5 seconds later by an outfielder. the path of the ball is a parabola. the ball is at its highest point as it passes the second baseman, who is 117 feet from home plate. about how far from home plate is the out fielder at ...
*May 9, 2011 by kelli*

**physics**

A ball with radius 12cm rolls on a level surface, and the translational speed of the center of mass is 0.35 m/s. What is the angular speed about the center of mass if the ball rolls without slipping?
*November 16, 2014 by bob*

**Physics**

You throw a 6.2 bowling ball down a bowling alley. The ball is in your hand for a distance of 1.5 meters. Its speed increases from 0 to 16m/s(36mph). How much force did you apply?
*December 17, 2012 by Cory*

**physics**

A hollow, thin-shelled ball of mass rolls along a horizontal surface with a translational speed of .
*March 22, 2011 by kyle*

**Physics... Please help me! I REALLY need help.**

A .30kg softball had a velocity of 15m/s at an angle of 35 degrees below the horizontal just before making contact with the bat. What is the magnitude of the change in momentum of the ball while it is in contact with the bat if the ball leaves the bat with a velocity of a)20m/...
*February 1, 2007 by Tammy*

**Biomechanics**

A pitched ball with a mass of 1 kg reaches a catcher's glove traveling at a velocity of 28 m/s. How much momentum does the ball have? how much impulse is required to stop the ball? If the ball is in contact with the catcher's glove for 0.5 s during the catch, how much average ...
*November 21, 2010 by Walter*

**Physics**

A rolling ball has an initial velocity of 1.6 m/s if the ball has a constant acceleration of .33 what is the velocity after 3.6 and the how far did the ball travel
*October 17, 2011 by JJJ*

**Physics**

A ball has an initial velocity of -23m/s. If the ball has a new velocity of 76m/s after 27 seconds, what is the ball acceleration
*December 12, 2013 by Jade*

**College algebra**

When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height in meters (as if you were on ...
*June 16, 2010 by Dimpleface*

**MATH :-\**

Stumped again .. A ball was dropped and measured rebound heights (in ft.) after each bounce. It was found that the rule y= 15(0.80^x) could be used to predict the rebound height of the ball, where y is the bounce height and x is the bounce number. From what initial height did ...
*December 18, 2012 by MaryJo*

**geometry**

If a kicker is 45 yards from a goal post, which is 10 feet tall, and he kicks the ball with an initial velocity of 75 feet per second, and an angle of 50 degrees above the horizontal, does the ball clear the goal?
*April 5, 2010 by John*

**Physics Honors**

A soccer ball is kicked horizontally off a 22.0 meter high hill and lands a distance of 35 meters from the edge of the hill. Determine the initial horizontal velocity of the soccer ball.
*October 23, 2011 by Allison*

**Physics**

A ball is thrown from a building standing 30m high, landing 10m away from the building 3.2 seconds after it was thrown. Find the angle above the horizontal and the initial velocity of the ball
*April 25, 2012 by James*

**Engineering Dynamics**

A ball is thrown so that the motion is defined by the equations x=5t and y=2+6t-4.9t^2, where x and y are expressed in meters and t is expressed in seconds. a) find velocity at t=1s, b) find the horizontal distance the ball travels before hitting the ground.
*September 25, 2014 by James*

**physics**

When serving, a tennis ball is almost motionless when it is slammed by the racquet. A force sensor in an experimental tennis racquet measures a force of 80 N during the impact with a 0.058 kg tennis ball. The impact lasts for 0.04 seconds. If the ball was at rest initially, ...
*June 1, 2013 by Anonymous*

**Physics**

A 2.5kg solid homogenous ball is rolling without slipping at 3.0 meters per second to the right on a level surface. The diameter of the ball is 80 centimeters. What is the total kinetic energy of the ball? Can someone give me the equation for this?
*February 24, 2014 by Robert*

**physics**

A 2.5kg solid homogenous ball is rolling without slipping at 3.0 meters per second to the right on a level surface. The diameter of the ball is 80 centimeters. What is the total kinetic energy of the ball? Can someone give me the equation for this?
*February 24, 2014 by Robert*

**Calculus **

Suppose a ball is thrown straight up into the air, and the height of the ball above the ground is given by the function h(t) = 6 + 37t – 16t2, where h is in feet and t is in seconds. At what time t does the ball stop going up and start returning to earth?
*October 17, 2014 by Mary*

**science**

An object is dropped off of a 27 meter tall building. How long is it in the air before it hits the ground? To measure the height of a tree, a person throws a ball vertically upward, and takes 13 seconds to reach its maximum height which is exactly the height of the tree. How ...
*February 5, 2012 by Anonymous*

**physics**

A solid, horizontal cylinder of mass 8.0 kg and radius 1.30 m rotates with an angular speed of 5.50 rad/s about a fixed vertical axis through its center. A 0.250 kg piece of putty is dropped vertically onto the cylinder at a point 0.900 m from the center of rotation, and ...
*May 3, 2011 by Dani*

**physics.**

A 20.0 kg cannon ball is fired from a cannnon with muzzle speed of 1000 m/s at an angle of 37.0 with the horizontal. A second ball is fired at an angle of 90.0. Use the conservation of energy principle to find a] the maximum height reached by each ball and b] the total ...
*March 15, 2007 by Jean*

**phy**

A ball is thrown from the window of a high-rise building with an initial velocity of 6.1 m/s at an angle of 32 deg. below the horizontal. The bill strikes the ground 4.4 seconds after being thrown. Find the height from which the ball was thrown.
*October 6, 2010 by Anonymous*

**physical**

A ball is thrown from the window of a high-rise building with an initial velocity of 7.7 m/s at an angle of 34 deg. below the horizontal. The bill strikes the ground 4.2 seconds after being thrown. Find the height from which the ball was thrown.
*October 15, 2011 by Anonymous*

**physics**

140gm baseball travel 39m/s hits bat and travels at 45m/s at 30degree angle above horizontal,ball in contact wiht bat for 1.2ms calculate magnitude of average force on ball by bat
*January 7, 2012 by Anonymous*

**SCIENCE!!**

a. When a ball is thrown straight up, by how much does the speed decrease each second? b. After the ball reaches the top and begins its return back down, by how much does its speed increase each second? c. Compare the times going up and coming down. Please Help!! Thanks!! :)
*September 20, 2010 by Happy Face*

**SCIENCE!!**

a. When a ball is thrown straight up, by how much does the speed decrease each second? b. After the ball reaches the top and begins its return back down, by how much does its speed increase each second? c. Compare the times going up and coming down. Please Help!! Thanks!! :)
*September 20, 2010 by Happy Face*

**SCIENCE!!**

a. When a ball is thrown straight up, by how much does the speed decrease each second? b. After the ball reaches the top and begins its return back down, by how much does its speed increase each second? c. Compare the times going up and coming down. Please Help!! Thanks!! :)
*September 20, 2010 by Smiley*

**physics**

A tennis ball of 60g is dropped from a height of 2.0m,It rebounds but loses 25% of its kintic energy as thermal energy.Ignoring air resistance,calculate (1)the kinetic energy of the tennis ball when hits the ground. (2)the height reached on the ground
*April 6, 2011 by Physics,help.*

**algebra**

Formula given: H=7+70t-16tsquared. Ball kicked straight up from a height of 7 feet. Ball travels 70 feet per second. How high is the ball after 3 seconds (t)?
*May 11, 2010 by Rick*

**Physics**

After falling from rest from a height of 27 m, a 0.53 kg ball rebounds upward, reaching a height of 17 m. If the contact between ball and ground lasted 1.6 ms, what average force was exerted on the ball?
*February 25, 2011 by Anonymous*

**Physics**

After falling from rest from a height of 30 m, a 0.49 kg ball rebounds upward, reaching a height of 20 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on the ball?
*September 12, 2011 by LeVonte*

**physics**

Suppose a player is practicing kicking a soccer ball at a wall. The ball has a mass of 5kg and is kicked at a rate of 11m/s in 2 sec. AT what force does the ball hit the wall
*May 4, 2012 by Anonymous*

**Physics**

After falling from rest from a height of 35 m, a 0.49 kg ball rebounds upward, reaching a height of 25 m. If the contact between ball and ground lasted 1.7 ms, what average force was exerted on the ball?
*September 20, 2012 by Freedo*

**physics**

After falling from rest from a height of 30 m, a 0.48-kg ball rebounds upward, reaching a height of 20 m. If the contact between ball and ground lasted 1.8 ms, what average force was exerted on the ball?
*February 25, 2013 by adam*

**physics**

After falling from rest from a height of 26 m, a 0.49-kg ball rebounds upward, reaching a height of 16 m. If the contact between ball and ground lasted 1.8 ms, what average force was exerted on the ball?
*March 20, 2013 by matt*

**physics**

A soccer ball is kicked off of the ground at 17 ft/sec @ 30 degrees. Determine the maximum height above the ground the ball reaches and how far downfield the ball lands.
*January 20, 2014 by Marina*

**Physics**

A ball is thrown horizontally from the top of a building 17.6 m high. The ball strikes the ground at a point 67.7 m from the base of the building. The acceleration of gravity is 9.8 m/s2. Find the time the ball is in motion
*October 26, 2014 by Maurissa*

**Physics**

a tennis ball is thrown vertically upward from the ground and the student gazing out of the window sees it moving upward pass him at 5 m/sec. the window is 10 m above the ground. how high does the ball go above the ground
*December 1, 2012 by john daniel*

**science**

you have a ball of steel and a ball of iron both of the same volume. The ball of of steel has a larger mass. Is it denser, less dense, or does it have the same density as the ball of iron. Explain.
*August 19, 2014 by shohanur*

**science**

you have a ball of steel and a ball of iron both of the same volume. The ball of of steel has a larger mass. Is it denser, less dense, or does it have the same density as the ball of iron. Explain.
*August 19, 2014 by shohanur*

**Physics**

I have two different questions I can't figure out. 1) Projectile motion: At what initial speed must the basketball player throw the ball at an angle of 55 degrees above the horizontal, to make the foul shot? The horizontal distance from the ball to the basket is 13 feet. ...
*July 6, 2010 by Pat*

**physics**

1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on the floor. How much ...
*July 7, 2010 by Ricky*

**physics**

1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on the floor. How much ...
*July 7, 2010 by Ricky*

**math**

A golf ball is hit with an initial velocity of 135 feet per second at an angle of 22 degree above the horizontal. will the ball clear a 25-foot-wide sand trap whose nearest edge is 300 feet from the golfer?
*June 12, 2009 by Kara*

**physics**

A football, if it was kicked when initially at rest, is inflated such that it will move in the direction of the kick with h=0.8 of the kicking foot's velocity We now consider the same ball being kicked while it's moving towards the football player's foot. Before the kick the ...
*July 5, 2013 by anonim*

**Physics**

A 5.50-kg ball, moving to the right at a velocity of +2.35 m/s on a frictionless table, collides head-on with a stationary 7.60-kg ball. Find the final velocities of the balls if the collision meet the following conditions. (a) elastic 5.5-kg ball = Incorrect: Your answer is ...
*March 26, 2013 by Anonymous*

**Physics**

A pinball machine uses a spring that is compressed 4.0 cm to launch a ball. If the spring constant is 13 N/m, what is the force on the ball at the moment the spring is released? I don't understand this I guess... Does the ball leave the spring at the equalbarium position four ...
*May 16, 2009 by HELP ME!*

**PHYSICS**

Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 57 cm above the ground at an angle of 80° with respect to the vertical. (a) The speed of the ball as it leaves the racquet is 17 m/s and it must travel a distance ...
*October 16, 2007 by STEPH*

**physics-question 7**

A baseball is thrown at an angle of 26 degrees relative to the ground at a speed of 22.1 m/s. The ball is caught 39.2327 m from the thrower. The acceleration due to gravity is 9.81 m/s2 . How high is the tallest spot in the ball’s path? Answer in units of m
*November 1, 2011 by kelly*

**physics**

4 same conductor balls with charge q = 40 ́C and mass m = 30g mare located at the corners of a square a = 30cm. Now let the charged ball move freely from the initial position. What the final speed the ball can reach?
*September 11, 2014 by ali*

**physics**

Momentum: three balls move in the same straight line. Balls A and B move in the same direction at velocities of 2m/s and 8m/s respectively. Ball AC moves in the opposite direction at 6m/s and collides with ball B, whereafter ball B collides with ball A. the masses of balls A...
*September 18, 2011 by Juls Secondary high school*

**physics**

A bat hits a moving baseball. If the bat delivers a net eastward impulse of 0.7 N-s and the ball starts with an initial horizontal velocity of 3.8 m/s to the west and leaves with a 5.2 m/s velocity to the east, what is the mass of the ball (in grams)?
*July 2, 2008 by Elisa*

**physics**

Two balls, of masses = .029 kg and = .06 kg, are suspended. The lighter ball is pulled away to a 60 degree angle with the vertical and released. What is the speed of the lighter ball before impact?
*March 11, 2010 by Anonymous*

**physics**

A 2940 kg demolition ball swings at the end of a 16.9 m cable on the arc of a vertical circle. At the lowest point of the swing, the ball is moving at a speed of 8.28 m/s. Determine the tension in the cable.
*February 24, 2011 by thaokieu*

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