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February 10, 2016

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College Physics
A batted baseball is hit with a velocity of 47.3 m/s, starting from an initial height of 8 m. Find how high the ball travels in two cases: (a) a ball hit directly upward and (b) a ball hit at an angle of 70° with respect to the horizontal. Also find how long the ball stays in ...
September 12, 2011 by HELP

College Physics
A batted baseball is hit with a velocity of 47.3 m/s, starting from an initial height of 8 m. Find how high the ball travels in two cases: (a) a ball hit directly upward and (b) a ball hit at an angle of 70° with respect to the horizontal Also find how long the ball stays in ...
September 12, 2011 by HELP

Physics
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 7.8 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the maximum height above ...
September 16, 2015 by James

physics
A ball of mass 1.04 kg at the end of a 0.52 m long string is swung in a vertical circle at the fastest constant speed the ball can have without the string breaking. If the string can only exert 33 N of force without breaking, a) What is the speed of the ball?
January 20, 2012 by Anonymous

college physics
A 3.00 kg ball is thrown vertically into the air with an initial velocity of 15.0 m/s. The maximum height of the ball is
September 2, 2010 by Anonymous

physics
Rutvi tosses a ball upwards with an initial velocity of 12.0 m/s. What is the acceleration of the ball 3.1 seconds after she threw it?
August 26, 2011 by Jeon

physics
A boy throws the ball vertically upwards with an initial velocity of 15m\s,what is the magnitude and direction of the ball
January 22, 2012 by soul

physics
Two students are on a balcony 18.3 m above the street. One student throws a ball (ball 1) vertically downward at 12.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the balcony on the way down...
August 29, 2011 by B

physics
Two students are on a balcony 18.3 m above the street. One student throws a ball (ball 1) vertically downward at 12.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the balcony on the way down...
August 29, 2011 by B

Physics
A baseball is seen to pass upward by a window 24 m above the street with a vertical speed of 8 m/s. The ball was thrown from the street. (a) What was its initial speed? (b) What altitude does it reach? (c) How long after it was thrown did it pass the window?
October 24, 2010 by Jen

calculus
A golf ball of mass 0.05 kg is struck by a golf club of mass m kg with a speed of 50m/s will have an initial speed of v(m)=83m/(m+0.05) m/s. show that v'(m)>0 and interpret this result in context with the application. Compare v'(0.15) and v'(0.20) in context of the ...
September 27, 2012 by Corey

pre-calc
Physics: a ball is thrown vertically upward with an initial velocity of 80 feet per second. the distance (in feet) of the ball from the ground after t seconds if s=80t-16tt^2 a) draw the illustration b) for what time interval is the ball more than 96 feet above the ground? c) ...
November 10, 2011 by steph

physics
if ball is thrown upward with a initial velocity of 38.5 m/s and the maximum height of the ball is 74.1m. How long will it take the ball to reach it's maximum height
September 25, 2012 by lana

physics
A ball is projected upward at time t = 0.0 s, from a point on a roof 40 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 15.4m/s. Consider all quantities as positive in the upward direction. The time when the ball ...
May 13, 2015 by Ahmad

Physics
A girl throws a ball at a fence 10m away. The ball is 2m from the ground when it leaves her hand with an initial velocity of v=8 i+8 j m/s. When the ball hits the fence its horizontal velocity component is reversed (the vertical velocity component is unchanged). Where does the...
May 7, 2014 by Jason

Physics
a) A cannonball is fired horizontally from the top of a cliff. The cannon is at height H = 100 m above ground level, and the ball is fired with initial horizontal speed v_0. Assume acceleration due to gravity to be g = 9.80 m/s^2. Assume that the cannon is fired at time t = 0 ...
September 26, 2008 by Sam

Physics
A tennis ball is struck such that it leaves the racket horizontally with a speed of 53 m/s. The ball clears the net and hits the ground a horizontal distance 29 m from where it was hit. How long was the ball in the air and how high was the ball above the ground when it is hit?
May 1, 2008 by Angelina

Math velocity
A ball is thrown straight up from the edge of the roof of a 60.0 m tall building. If a second ball is dropped from the roof 2.0 s later what must the initial velocity of the first ball be if both are to reach the ground at the same time?
June 22, 2015 by Tom

Math, Please Help!!!
1. The problem statement, all variables and given/known data a ball is thrown straight down from the top of a 220 feet building with an initital velocity of -22ft/s. What is the velocity of the ball after 3 seconds? What is the velocity of the ball after falling 108 feet? 2. ...
February 3, 2012 by Desperate!!!!

College Algebra
A ball is thrown up from a twelve foot platform with an initial velocity of 112 feet/second. The formula that describes the height of the ball in terms of time is: f(t) = -16t^2+112t+12. Determine the time at which the ball reaches its maximum height. Determine the maximum ...
August 11, 2011 by Lauren Marie

Physics
A baseball with a mass of 150 g is thrown horizontally with a speed of 39.5 m/s (88 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.0 m/s (101 mi/h). Determine the average force exerted on the ball by the bat. ...
March 2, 2014 by Elaine

Physical Science
At a baseball game a ball of mass m = 0.11 kg moving at a speed v = 22 m/s is caught by a fan. the ball is stopped in 0.014 s , find the average force of the ball on the catcher's hand?
January 28, 2016 by Eryn

PHYSICS HELPPPP!
When a tennis player hits .6kg tennis ball, the racket applies an average force of 250 N to the ball for a time about .15 seconds. Suppsoe that after the colliding, the 1 kg ball was measured to be moving to the left, but onl at 3.25 m/s. What would be the direction and speed ...
August 21, 2012 by Anonymous

physics
A .15kg ball is dropped from a height of 14 m to the ground below, and hits the ground with a speed of 12 m/s. With what speed would the ball have hit the ground if there were no air resistance? How much work does the air resistance do on the ball?
October 4, 2010 by Jessica

Physics
Equate the increase in potential energy at the higher elevation, M g H, to the decrease in kinetic energy. Make sure you include the kinetic energy of rotation, which is (1/2) I w^2. For a sphere of radius R, V = R w and I =(2/5) I R^2 Therefore KE(rotational) = (1/2)(2/5)M R^...
March 21, 2007 by drwls

physics
A steel ball of mass 0.300 kg is fastened to a cord that is 70.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 2.50 kg steel block initially at rest on a frictionless surface. The ...
March 28, 2011 by Taylor

physics
A basketball is launched with an initial speed of 10.0 m/s and follows the trajectory shown. The height of the basket y= 1.50m.From what distance x the ball is shot? Note: The drawing is not to scale. Angle is 45degrees
February 5, 2014 by reb

physics
A ball, initially at y = 0, is thrown straight down and takes 1.40 s to move 13.8 m in the - y direction. Calculate the initial velocity of the ball.
September 22, 2011 by Dave

Algebra - word problem
A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height, t seconds after it is tossed is (-16t^2 + 96t) feet. The green ball is given an initial velocity of 80 feet per second, and its ...
November 30, 2009 by lindy

Engineering Physics
A car and a train move together along straight, parallel paths with the same constant cruising speed v(initial). At t=0 the car driver notices a red light ahead and slows down with constant acceleration -a(initial). Just as the car comes to a full stop, the light immediately ...
September 16, 2009 by Andrew Rozmarynowycz

physics
a ball is thrown up and reaches a maximum height of 5 m. a) what is the initial velocity of the ball? b) how long does it take for the ball to reach its maximum height? c) what is the final velocity of the ball? if i returns to where it was thrown from?
November 29, 2012 by Isis

science
girl throws the ball with a certain angle. It covers maximum horizontal distance R. How much height ball reaches if she throws the same ball vertically upward? Assume her muscles give the ball same speed in each case.
August 14, 2012 by amol

Physics Honors
A pool ball leaves a 0.60 meter high table with an initial velocity of 2.4 m/s. Predict the time required for the pool ball to fall to the ground and the horizontal distance between the table's edge and the ball's landing location.
October 23, 2011 by Allison

physics
using a powerful air gun, a steel ball is shot vertically upward with a velocity of 80 m/s, followed by another shot after 5 seconds. find the initial velocity of the second ball to meet the first ball 150 m from the ground.
January 25, 2014 by Astro

Physics
A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 56.2° and a speed of v1 = 24.8 m/s. It bounces off at an angle of θ2 = 71.0° and a speed of v2 = 10.0 m/s. (a) What is the magnitude of the change in momentum of the ...
October 28, 2014 by Anonymous

Physics
4. A basketball is thrown from a height of 1.60(m), with an angle of 45o above the horizontal. (a) With what initial speed must the basketball be thrown so that it reaches the basket at the highest point of its trajectory? The basket is at a height of 3.05(m) above the ground...
February 15, 2014 by maria

calculus
if a ball is thrown vertically upward with an initial velocity of 48 ft/s, then its height, s, after t seconds is given by s(t)= 48t-16t^2. a) what is the velocity of the ball after 1 second? b) when does the ball hit the ground? c) with what velocity does the ball hit the ...
April 8, 2013 by moises

PHYSICS
1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to coast along a level track at a speed of 2 m/s...
December 4, 2008 by kim

PHYSICS
1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to coast along a level track at a speed of 2 m/s...
December 4, 2008 by kim

physical
I'm working on projectile motion and I am supposed to find the speed for this problem, however I'm having trouble setting up the problem. I'm not finding any help from the book either. A golfer hits a shot to a green that is elevated 2.50 m above the point where the ball is ...
February 17, 2015 by Carissa

Fly Ball Lab - Projectile Motion Please HELP FAST!
In this lab, you will perform graphical and mathematical analysis on a tennis ball that is struck by a bat. The data required for this lab is the horizontal displacement of the ball from the location where it was hit to the point where it first strikes the ground and the time ...
November 12, 2013 by Amanda

physics
A rubber ball (mass 0.21 kg) is dropped from a height of 1.7 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.6 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? Magnitude? Direction? (b) If the ...
December 4, 2011 by glenmore

maths
A cannon is placed on a hillside pointing up the hill, where the hill is at an angle a Pi/4 to the horizontal. The cannon points at an angle Pi/6 to the slope. and a shot is red uphill with initial speed v0. (i) Find the maximum value of the distance between the cannon ball ...
March 2, 2013 by hayley

Science
A ball thrown from the edge of a 35m high cliff takes 3.5s to reach the ground below. What was the ball's initial velocity?
September 7, 2009 by Nick

physics
A 0.50 kilogram ball is thrown vertically upward with an initial kinetic energy of 25 joules. Approximately how high will the ball rise ?
April 30, 2011 by lucy

physics
Kevin tosses a 0.10 kg ball horizontally with an initial velocity of 22.00 m/s. What is in m/s2 the vertical component of the acceleration of the ball 3.82 seconds after he threw it?
September 28, 2011 by Elisabeth

Physics
A man kicks a ball at an angle of 55 degrees above the ground with an initial velocity of 25 m/s. How far and how high does the ball travel?
September 17, 2012 by Kristen Help!!!! Please!

Physics
A batter hits a ball and it is caught 4 seconds later 100 meters from home plate. What is the initial velocity of the ball?
May 28, 2014 by Ashley

Physics
A softball of mass 0.200 kg that is moving with a speed of 8.2 m/s collides head-on and elastically with another ball initially at rest. Afterward the incoming softball bounces backward with a speed of 3.9 m/s. 1. Calculate the velocity of the target ball after the collision. ...
November 12, 2009 by Anonymous

U-Phys
A 0.060kg tennis ball, moving with a speed of 5.8m/s, has a head-on collision with a 0.10kg ball initially moving in the same direction at a speed of 2.8m/s. Assuming a perfectly elastic collision, determine the speed of each ball after the collision. Determine the direction ...
October 19, 2009 by Taylor

PHYSICS 1
When a pitcher throws a curve ball, the ball is given a fairly rapid spin. A 0.15 kg baseball with a radius of 3.7 cm is thrown with a linear speed of 41 m/s and an angular speed of 37 rad/s. Assume that the ball is a uniform, solid sphere. (b) Calculate how much of its ...
October 20, 2008 by kelsey

Physics university
In a tennis match, a player wins a point by hitting the ball sharply to the ground on the opponent's side of the net. If the ball bounces upward from the ground with a speed of 17 m/s , and is caught by a fan in the stands with a speed of 12 m/s , how high above the court is ...
October 12, 2009 by Jessica

algebra
A ball is thrown upward with an initial velocity of 14 meters per second from a cliff that is high. The height of the ball is given by the quadratic equation H = 49t^2 + 14t +60 where h is in meters and t is the time in seconds since the ball was thrown. Find the time that the...
March 4, 2013 by Sherrydoug2

Physics
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.81 m from the end of the track after falling a vertical distance h2 = 1.03 m from the end of the track. (a) At what...
October 14, 2012 by Angela

Physics
A person throws a ball upward into the air with an initial velocity of 15.0 m/s. Calculate the following: a.) how high it goes. b.) how long the ball is in the air before it comes back to his hand. c.) at what time(s) will the ball pass a point 8.00 m. If you got multiples ...
September 26, 2011 by Jane

Physics
A person throws a ball upward into the air with an initial velocity of 15.0 m/s. Calculate the following: a.) how high it goes. b.) how long the ball is in the air before it comes back to his hand. c.) at what time(s) will the ball pass a point 8.00 m. If you got multiples ...
September 27, 2011 by Phil

Physics
I solved part A but not part B: A batted baseball leaves the bat at an angle of 35.0 degrees above the horizontal and is caught by an outfielder 370 ft. from home plate at the same height from which it left the bat. Part A: What was the initial speed of the ball? Answer: 34.3 ...
September 25, 2010 by .

maths and physics
A cannon is placed on a hillside pointing up the hill, where the hill is at an angle a Pi/4 to the horizontal. The cannon points at an angle Pi/6 to the slope. and a shot is red uphill with initial speed v0. (i) Find the maximum value of the distance between the cannon ball ...
March 3, 2013 by tom

calculus
A ball is thrown 12 meters in the air (so that the initial up-and-down distance is 24 meters). The ball rebounds 95% of the distance it falls. What is the total vertical distance traveled by the ball before it stops bouncing?
November 12, 2014 by Anonymous

Physics
a 1kg ball is thrown into the air with an initial velocity of 30 m/sec. how much kinetic energy does the ball have? -how much potential energy does the ball have when it reaches the top of its ascent? -how high into the air did the ball travel?
November 22, 2009 by Kim

Physics Honors
A football is kicked with an initial velocity of 25 m/s at an angle of 45 degrees with the horizontal . Determine the time of flight, the horizontal distance, and the peak height of the long jumper.
October 23, 2011 by Allison

physics - HELP ASAP!
A 3.60 kg ball is dropped from the roof of a building 184.8 m high. While the ball is falling to earth, a horizontal wind exerts a constant force of 12.1 N on the ball. (acceleration of gravity = 9.81 m/s^2) How far from the building does the ball hit the ground? What is the ...
November 7, 2009 by Desperate Help!

last physics problem!
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.93 m from the end of the track after falling a vertical distance h2 = 1.18 m from the end of the track. (a) At what ...
April 15, 2010 by brittany

physics
A softball of mass 0.220 kg that is moving with a speed of 4.0 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward the incoming softball bounces backward with a speed of 1.8 m/s. a) Calculate the velocity of the ...
May 30, 2011 by Nick

physics
A softball of mass 0.220 kg that is moving with a speed of 4.0 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward the incoming softball bounces backward with a speed of 1.8 m/s. a) Calculate the velocity of the ...
May 31, 2011 by Nick

Physics
A ball is thrown straight upward. At 6.30 m above its launch point, the ball’s speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
September 12, 2013 by Briana

phyics
A ball is thrown straight upward. At 5.00 m above its launch point, the ball’s speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
October 20, 2013 by Johnny

physics
A ball is thrown straight upward. At 4.36 m above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
September 21, 2014 by ryan

Physics
A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 21.0 m/s? Where is the ball after 2.00 s? vertical m from the ground? If the ball is still in the air, how long before it hits the ground? (If the ball is not in the air, enter 0...
January 28, 2012 by Anonymous

physical science
A tennis ball is thrown vertically upward wih an initial velocity of 8.0m/s. A) What will its speed be wheen it returns to its tarting point? B) How long will it take for it to reach its starting poing?
April 16, 2009 by Taylor

algebra
Brandon hit a baseball upward with an initial speed of 120 feet per second. How much later did Ollie catch the ball? Use the formula h = -16t squared + vt.
March 4, 2014 by John

physics
A ball is projected upward at time t = 0.0 s, from a point on a roof 10 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is Consider all quantities as positive in the upward direction. At time the velocity of the ball is ...
October 23, 2014 by anthony

physics
A soccer ball leaves the foot of a player with an intitial velocity of 22 m/s at an angle of 30 degrees above the positive x-axis. After flying through the air, the ball lands with a velocity of m/s at an angle of degrees above the x-axis
September 7, 2012 by mark

physics
a ball of mass 0.1kg makes an elastic head on collision with a ball of unknown mass,initially at rest .if the 0.1kg ball rebounded at one third of its original speed, what is the mass of the other ball?
September 12, 2011 by gallium

physics
A ball is thrown vertically upwards with an initial velocity of 20.96 m/s. Neglecting air resistance, how long is the ball in the air? What is the greatest height reached by the ball? this problem seems easy enough but I can't seem to get the answer. How can I get time using ...
January 16, 2008 by courtney

cal
A ball is thrown directly upward from ground level with an initial velocity v(0) = 96 ft=s. Assuming that the ball’s only acceleration is that due to gravity (i.e., a(t) = ��32 ft=s2), determine the maximum height reached by the ball and the time it takes to ...
May 3, 2011 by fcv

Science: Phsycs
A baseball player swings his 2 kg bat with a speed of 15 m/s. They hit a 0.142 kg baseball which was approaching at a speed of 40 m/s. the ball rebounds in the other direction at 45 m/s. If the baseball and bat are in contact for 5 ms, what is the average force the bat exerts ...
October 25, 2011 by Mariah

PHYSICS
1....How much force needed to bring a 3200 lb car from rest to a velocity of 44 m/s in 8 sec.? 2....A ball with a mass of 2 kg move to the right with a speed of 2 m/s. It hits a ball of mass 0.50 kg which is at rest. After collision the second ball moves to the right with a ...
February 18, 2011 by EM

Physics
A ball rolls down a 1.00 m long and 0.40 m inclined plane and falls off down on the floor, 1.20 m. a) Calculate the speed of the ball when it falls of the plane and the speed in vertical and horizontal direction. b) Where does the ball land? c) At what speed and under what ...
May 17, 2014 by Physics: A ball rolls down an inclined plane?

Physics
A ball of mass 5.0 kg moving with speed of 2.0 m/s in the +x-direction hits a wall and bounces back with the same speed in the -x-direction. What is the change of momentum of the ball?
March 31, 2011 by Natalia

physics
A ball of mass m strikes a wall that is perpendicular to its path at speed +v and rebounds in the opposite direction with a speed –v. The impulse imparted to the ball by the wall is
February 21, 2014 by jesse k

IB pHYSICS REGENTS
A ball is thrown straight downward with a speed of 0.50 meter per second from a height of 4.0 meters. What is the speed of the ball 0.70 second after it is released?
February 11, 2010 by Anonymous

Physics
When a 58 gram tennis ball is served, it accelerates from rest to a speed of 45 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44 cm. What is the magnitude of the net force acting on the ball?
September 19, 2012 by Matoro

physics
When a 58 gram tennis ball is served, it accelerates from rest to a speed of 45 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44 cm. What is the magnitude of the net force acting on the ball?
October 16, 2013 by lily

physics
a ball of weight 200 grams,is tied to the end of a cord and whirled in a horizontal circle of radius 0.6 m.if the ball makes five complete revolutions in 2 seconds,what will be the linear speed of the ball?
December 31, 2014 by komal

physics
In a game of pool the cue ball strikes another ball of the same mass and initially at rest. After the collision the cue ball moves at 3.50 m/s along a line making an angle of 22 degrees with its original direction of motion. and the second ball had a speed of 2 m/s. a)What is ...
March 4, 2007 by Chris

physics
I need help solving these problems. I tried but my teacher did not teach it to us so it is very difficult for me. Thanks. "Projectiles launched at an angle" 1. A golfer can hit a golf ball a horizontal distance of over 300 m on a good drive. What maximum height will a 301.5 m ...
October 24, 2006 by anonymous

Physics
A dropping ball initial at rest is dropped 1.5m; calculate a) the traveling time of the ball and b) its velocity just before reaching the ground.
February 10, 2013 by John

physics
Consider a ball that picks up a speed of 3 m/s each second when its rolls from rest down an inclined plane. If the ball takes 4 seconds to reach the bottom, its speed at the bottom will be?
June 22, 2011 by Alli

physics
a ball is thrown at an original speed of 8.0 m/s at an angle of 35 degrees above the horizontal. What is the speed of the ball when it returns to the same horizontal level?
January 26, 2011 by Anonymous

physics
A professional golfer can hit a ball with a speed of 70 m/s. What is the maximum distance a golf ball hit with this speed could travel on Mars, where the value of g is 3.71 m/s^2?
September 18, 2013 by Anonymous

Physics for Life science
You are on a skateboard of mass 5.00kg with a ball in hands (mass of the ball is 600kg). You throw the ball forward horizontally and find that you recoil back with 2.0m/s. What is the forward speed of the ball? (Use your own mass where needed).
June 1, 2010 by TangenT

Physics- check answer please
1. A 15 kg boy falls out of his bed at a height of 0.50 m. What is the amount of gravitational potential energy lost by the boy? my answer: 74 J 2. What is the speed of a 0.25 kg ball if its kinetic energy is 15 J? my answer: 11 m/s 3. if the speed of an object is tripled and ...
July 4, 2014 by Liz

Physics
On a flat golf course, a golf ball lies 12m from the base of a lamp post. A golfer hits the ball with a club, giving the golf ball an initial velocity of 18 m/s. At 2.9 seconds, after being hit, the golf ball strikes the top of the lamp post. How high (m) is the lamp post?
May 26, 2015 by Alex

physics
A baseball is thrown with an initial velocity of magnitude v at an angle of 27.2 with respect to the horizontal (x) direction. At the same time, a second ball is thrown with the same initial speed at a different angle with respect to x. If the two balls land at the same spot, ...
January 30, 2010 by Sal

Physics
A ball is thrown straight upward (along the y-axis) with an initial velocity of 16 m/s from the top of a building located 20 m above ground. Find the maximum height of the ball. In other words, find the ball's maximum distance from the ground. Be aware that once you find the ...
June 20, 2011 by Promise

PHYSICS
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.20 m/s and angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. (a) If the base of the building is taken to be the origin of the coordinates, ...
September 22, 2013 by Anonymous

physics
A 0.200 kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.100 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction. The speed of the 0....
December 25, 2009 by Heart

physics-impulse
A tennis ball of mass m = 0.068kg and speed v = 21m/s strikes a wall at a 45∘ angle and rebounds with the same speed at 45 What is the magnitude of the impulse given to the ball?
March 14, 2014 by Edward

Physics
It takes 2.5 s for a small ball released from rest from a tall building to reach the ground. The mass of the ball is 0.05 kg. Calculate the height from which the ball is released. Ok so I have the time, initial velocity, and the acceleration. But the mass totally throws me off...
October 9, 2007 by Lindsay

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