Thursday

October 8, 2015
Number of results: 32,678

**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*

**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**

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*

**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 - 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 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 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 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*

**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 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*

**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 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**

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**

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**

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**

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 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**

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- 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 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**

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**

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**

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-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*

**physics**

A 0.1kg ball dropped on the floor hits with a speed of 4.0m/s and rebounds at a speed of 3.8m/s. Calculate the impulse delivered to the ball by the floor.
*October 2, 2012 by taryn*

**Physic**

A 135 g baseball traveling at a speed of 36 m/s hits a bat and moves back along its incoming trajectory with a speed of 47 m/s. a) What is the impulse delivered to the ball by the bat? (Answer: 11.2kg * m/s) b) If the duration of the bat-ball collision is 7 x 10^-4s, what is ...
*April 22, 2014 by Anonymous*

**Physics**

A golf ball is hit with an initial velocity of 15 meters per second at an angle of 35 degrees above the horizontal. What is the vertical component of the golf ball's initial velocity? a)8.6 m/s b)9.8 m/s c)12 m/s d)15 m/s I know you use 15cos 35 feta to solve the question but ...
*February 3, 2014 by Jenna*

**Physics**

Standing on the top ledge of a 55 m high building you throw a ball straight up with an initial speed of 29 m/s. How long to the nearest second, does it take to hit the ground? Answer after rounding is 7 seconds. The next question is "If the building in the previous problem is ...
*August 26, 2012 by Anonymous*

**Intergated chemistry/physics**

Which has more momentum: a 45 gram golf ball travelling at 180 miles per hour or a 430 gram soccer ball travelling at 20 miles per hour?
*October 4, 2012 by Laura*

**physics**

A quarterback throws a pass that is a perfect spiral. In other words, the football does not wobble, but spins smoothly about an axis passing through each end of the ball. Suppose the ball spins at 5.8 rev/s. In addition, the ball is thrown with a linear speed of 17 m/s at an ...
*January 12, 2011 by sarah*

**Physics**

If you throw a cricket ball up into the air and the ball leaves your hand at 1.8m and travel with a speed of 9.7m s. What is the speed at the point it hits the floor. Accerlation due to gravity is 9.8 ms no air resistance
*December 11, 2010 by joleen*

**physics**

Lance threw a ball straight up into the air. The ball's gravitational potential energy at its peak height was 0.4 joules, and its speed when it hit the ground was 4 meters per second. What was the mass of the ball?
*March 2, 2011 by Stephanie*

**Physics**

When a 51.7 gram tennis ball is served, it accelerates from rest to a speed of 41.2 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 49.5 cm. What is the magnitude of the net force acting on the ball in newtons?
*December 19, 2012 by Toung*

**physics**

When a 57.0 gram tennis ball is served, it accelerates from rest to a speed of 46.5 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44.8 cm. What is the magnitude of the net force acting on the ball in newtons?
*January 14, 2014 by Carla*

**Physics**

Car A and B are passing each other in different lanes. Car A has an initial speed of 15m/s and is gaining speed at 1.5m/s^2. Car B has an initial speed of 20m/s and is gaining speed at 2.0m/s^2. Find when and where the cars will pass one another and their speeds as they are ...
*February 20, 2008 by Anonymous*

**PHYSICS WORK PROBLEM due tonight!! please help!**

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 **

Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 22 m/s, and puck 2 has an initial speed of 14 m/s. They collide and stick together. Find the components along x and y of the initial velocities of both particles. v1xi = 19.1 m/s ...
*November 14, 2010 by J Velji*

**physics**

A golf ball is hit with an initial velocity of 50 m/s at an angle of 45° above the horizontal. How far will the ball travel horizontally before it hits the ground?
*October 11, 2011 by ashley*

**Algebra**

A ball is thrown up with an initial velocity of 32 feet per second. How many seconds will it take for the ball to return to the ground using the formula h=vt-16t^2?
*March 25, 2012 by Zach*

**Algebra**

DeSean throws a ball up with an initial vertical velocity of 30 feet per second from a platform that is at ground level. How long will the ball be in the air?
*April 4, 2014 by Kylie*

**physics**

A ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. The ball is hit with an initial velocity of 23.0 m/s at an angle of 58.0° above the horizontal. (a) How high will the ball rise? (b) ...
*February 14, 2010 by candace*

**Algebra 1**

A ball is thrown upward with an initial velocity of 35 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = -49t^2 + 35t + 140 where h is in meters and t is the time in seconds since the ball was thrown. Find the ...
*March 7, 2013 by Sherry*

**physics**

A 70 kg man holding a 0 . 857 kg ball stands on a frozen pond next to a wall. He throws the ball at the wall with a speed of 11 . 9 m / s (relative to the ground) and then catches the ball after it rebounds from the wall. How fast is he moving after he catches the ball? Ignore...
*May 7, 2014 by nic*

**Physics Correction**

You drop a ball from a window on an upper floor of a building and it is caught by a friend on the ground when the ball is moving with speed vf. You now repeat the drop, but you have a friend on the street below throw another ball upward at speed vf exactly at the same time ...
*February 7, 2012 by Haroula*

**physics**

A stationary billiard ball, mass 0.17 kg, is struck by an identical ball moving at 4.8 m/s. After the collision, the second ball moves off at 60° to the left of its original direction. The stationary ball moves off at 30° to the right of the moving ball's original direction. ...
*January 24, 2013 by Anonymous*

**physics**

Clint Dempsey takes a free kick and kicks a soccer ball with a mass of 440 grams at 98 miles per hour. what is the momentum
*September 7, 2014 by joe*

**Physics**

A string 1.5 m long breaks when its tension is 100 N. a. What is the greatest speed with which the ball can be moved around a horizontal circle if the ball has a mass of 2 kg? b. Find the speed for the same setup, but for a vertical circle.
*May 30, 2012 by Dawnn Oneil*

**physics**

a convertible travels down a straight, level road at a slow speed of 13 km/h. A person in the car throws a ball with a speed of 3.6 m/s forward at an angle of 30 degrees to the horizontal. Where is the car when the ball lands?
*November 25, 2014 by Anonymous*

**physics**

Q A man throws a ball weighing 500g vertically upwards witha speed of 10m/s. 1) what will be its initial momentum? 2) What would be its momentum at the highest point of his flight?
*November 11, 2011 by asd*

**physics**

Q A man throws a ball weighing 500g vertically upwards witha speed of 10m/s. 1) what will be its initial momentum? 2) What would be its momentum at the highest point of his flight?
*November 11, 2011 by asd*

**Physics**

A ball of 0.5kg mass hits a wall at an angle of 30° and is then reflected making an angle of 90° with its original direction. if the duration of contact between the ball and the wall is 0.1s,calculate the force exerted on the wall. the initial and final velocities of ball are ...
*March 9, 2013 by Kinjal*

**Physics**

A cannon ball is fired from ground level with a speed of 86.0 m/s at an angle of 32 deg. above the horizontal. A 8.5 m tall wall is located 265 m away from the cannon. By how much does the cannon ball clear the wall? In the previous problem, what is the speed of the cannon ...
*March 2, 2014 by Yarielis*

**Physics**

A(n) 0.42 kg softball is pitched at a speed of 12 m/s. The batter hits it back directly at the pitcher at a speed of 27 m/s. The bat acts on the ball for 0.016 s. What is the magnitude of the impulse imparted by the bat to the ball? Answer in units of N · s. What is the ...
*February 1, 2015 by Monica*

**projectile motion physics**

There is a minimum angle above the ground such that if the ball is launched below this angle, it can never clear the bar, no matter how fast it is kicked. What is this angle?
*March 8, 2015 by Kevin*

**Physics - momentum**

Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 22 m/s, and puck 2 has an initial speed of 14 m/s. They collide and stick together. Find the components along x and y of the initial velocities of both particles. v1xi = 19.1 m/s ...
*November 16, 2010 by J Velji*

**Physic **

A ball is thrown toward a cliff of height h with a speed of 28m/s and an angle of 60∘ above horizontal. It lands on the edge of the cliff 3.3s later. a) How high is the cliff? i got 26.7 m b) What was the maximum height of the ball? my answer here was 30 m C) What is the...
*October 22, 2014 by Please help me with the last question *

**Physics**

Two particles with the same mass and same initial speed collide and stick together and leave the collision with half of their initial speed, bound together as one particle. What was the angle between the initial momenta of the particles before the collision?
*May 26, 2014 by Jojn*

**Physics**

Two particles with the same mass and same initial speed collide and stick together and leave the collision with half of their initial speed, bound together as one particle. What was the angle between the initial momenta of the particles before the collision?
*May 27, 2014 by Abby*

**Physics**

Two particles with the same mass and same initial speed collide and stick together and leave the collision with half of their initial speed, bound together as one particle. What was the angle between the initial momenta of the particles before the collision?
*May 27, 2014 by Abby*

**math**

a ball is thrown vertically upward from the ground level with an initial velocity "Vo" - V sub zero a. derive a formula for the time at w/c the ball hit the ground b. use the formula to prove that the impact velocity by the ball is -Vo
*September 17, 2012 by justine*

**physics**

A baseball (m = 148 g) approaches a bat horizontally at a speed of 43.8 m/s (98.0 mi/h) and is hit straight back at a speed of 48.4 m/s (108 mi/h). If the ball is in contact with the bat for a time of 1.08 ms, what is the average force exerted on the ball by the bat? Neglect ...
*July 25, 2013 by tcc*

**Physics AP**

A ball is thrown straight upward with a speed of +12 m/s. A) what's the ball's acceleration just after it is thrown? B) how much time does it take for the ball to rise to its maximum height? C) what's the approximate maximum height the ball reaches?
*September 15, 2012 by Anna*

**physics**

A 95 g tennis ball is traveling at 106 km/h when it bounces of a wall and travels in the opposite direction it came from at a speed of 88 km/h. a. Determine the impulse on the ball if the. (don’t forget that it is a vector) b. If the average force exerted on the ball by the ...
*January 22, 2012 by Fatima*

**physics**

A 95 g tennis ball is traveling at 106 km/h when it bounces of a wall and travels in the opposite direction it came from at a speed of 88 km/h. a. Determine the impulse on the ball if the. (don’t forget that it is a vector) b. If the average force exerted on the ball by the ...
*January 22, 2012 by Fatima*

**Physics**

A ball rolls off the edge of a 0.75m high lab table with a horizontal speed of 1.50 m/s. Calculate the time that the ball is in flight, calculate the vertical velocity of the ball just before striking the floor, and calculate the horizontal distance(range) that the ball will ...
*April 16, 2015 by Daniel*

**Physics (MOMENTUM)**

Please, help me answer this question. Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed. (a) Which ball has the greater momentum? (b) Which ball has greater kinetic energy? Thank you.
*May 2, 2013 by Kathy*

**Physics- Momentum**

A 170g cue ball is moving at 3.0 m/s when it strikes a 160g stationary numbered ball (object ball). After the collision the balls move off as shown. Determine the speed of the cue ball and the numbered (object) ball after the collision. The diagram illustrates the cue ball ...
*February 15, 2015 by Mysty*

**Physics**

A ball is thrown with initial velocity Vo=20.0 m/s from the top of a 50.0m tall building. Find the velocity Vg with which the ball strikes the ground. Find time Ttotal it takes for the ball to move to the ground.
*July 10, 2011 by Myyke*

**physics**

When a 58g tennis ball is served, it accelerates from rest to a speed of 45m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44cm. What is the magnitude of the net force acting on the ball?
*February 12, 2012 by Natasha*

**algebra math**

(QUEESTION 1) In view of the soccer fever, the PE department bought x identical soccer balls for $450.If the price of each ball was reduced by $3, they would have bought 5 more balls. (a) write down the price of each ball (b) write down the price of each ball if there was a ...
*May 21, 2012 by jackydrewls*

**Physics**

A bowling ball has a mass of 7 kg and a speed of 1.73 m/s. A baseball has a mass of 0.12 kg and a speed of 25.1 m/s. Which ball has the larger momentum? a. The bowling ball. b. More information needed c. The baseball. d. Both have the same momentum
*July 7, 2014 by Anonymous*

**Physics**

A 6.00 kg ball (ball 1), moving to the right at a velocity of +1.00 m/s on a frictionless table, collides head-on with a stationary 7.50 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision ball 1 m/s ball 2 m/s...
*November 2, 2008 by Brandon*

**physics**

A(n) 0.42 kg softball is pitched at a speed of 12 m/s. The batter hits it back directly at the pitcher at a speed of 27 m/s. The bat acts on the ball for 0.016 s. What is the magnitude of the impulse imparted by the bat to the ball? Answer in units of N · s. 011 (part 2 of 2) ...
*February 1, 2015 by Kev*