At the county fair, Chris throws a 0.15 kg baseball at a 2.0 kg wooden milk bottle, hoping to knock it off its stand and win a prize. The ball bounces straight back at 20% of its incoming speed, knocking the bottle straight forward. What is the bottle’s speed, as a percentage of the ball’s incoming speed?

Q: 2. A 6.2 kg object heading north at 3.0 m/s collides with an 8.0 kg object heading west at 3.5 m/s.…

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Q: How fast does Charlie Brown need to go in order to give a 0.46 kg football ball a momentum of 6.9…

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Q: In a switchyard, a 24,000 kg railroad car moving 1.8 m/s collides with a stationary 17,000 kg car.…

A:

Q: The man fires an 79 g arrow so that it is moving at 80 m/s when it hits and embeds in a 14 kg block…

A: Given Data Mass of the arrow m=79 g=79×10-3 kg Initial speed of the arrow is v1=14 m/s Mass of the…

Q: Nik throws a 0.2 kg bouncy ball at a wall at 12 m/s. The ball bounces straight back at him with a…

A: Formula Impulse = Force × time

Q: A block with a mass of 4.0 Kg is moving to the right with a speed of 2.0 m/s while another block…

A: Given:mass of block 1, m1 = 4 kgmass of block 2, m2 = 8 kgvelocity of mass 1, v1 = 2 m/svelocity of…

Q: A 8-g block slides with a velocity of 18 cm/s on a smooth level surface and makes a head-on…

A: Given Information:- Mass of the first block is m1=8 g Mass of the second block is m2=26 g Initial…

Q: A 1200 kg car moving at 5.6 m/s hits a 1500 kg car moving in the same direction at 2.1 m/s. If the…

A:

Q: One morning in Monterrey after a winter frost, a 1,400 kg car traveling west on Calle Hidalgo at 9.7…

A: Given : Mass of the car, m = 1400 kg speed of car, v = 9.7 m/s Mass of truck, M = 2800 kg Speed of…

Q: An 8 kg bowling ball, rolling at 1.2 meters per second, elastically strikes a .3 kg pool ball at…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: On a very muddy football field, a 120 kg linebacker tackles an 80 kg halfback. Immediately before…

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Q: A 6000-kg truck travelling North at 18 kph collides with a 4,000-kg bus moving West at 54 kph. If…

A: Convert the velocities into the base SI unit 18 kph=5 m/s54 kph=15 m/s

Q: Allison, 45 kg, is standing on a frozen pond wearing ice skates. If she throws a 10 kg bag of rice…

A: Mass of the Allison is M = 45 Kg Mass of the bag is m = 10 kg Velocity of the bag is v = 5 m/s

Q: A bullet with a mass of 0.020 kg collides in elastically with a wooden block of mass 2.5 kg,…

A: Given data:  Mass of bullet (m1) = 0.020 kg Mass of wooden block (m2) = 2.5 kg Initial speed of…

Q: What is the change in momentum of a 25 g baseball originally travelling at 30 m/s forward, if after…

A: Given:Mass of ball, m=25 gInitial velocity, u=30 m/sFinal velocity, v=-75 m/s   To determine change…

Q: A 110 kg linebacker running at 2.0 m/s and an 82 kg quarterback running at 3.0 m/s have a head-on…

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Q: A confused 53.kg bowler on ice skates is coasting forwards with speed 20 m/s when he catches a…

A:

Q: A 40-kg football player leaps through the air to collide with and tackle a 60-kg player heading…

A:

Q: A 25.0kg shell is fired from a 2100 kg cannon with a velocity of 500. m/s. what is the resulting…

A: GivenMass of the shell ms = 25.0 kgMass of the cannon mc = 2100 kgVelocity of the shell vs = 500 m/s

Q: A 46.4 kg football player moving at 5.05 m/s hits a 38.86 kg player moving the opposite direction at…

A: mass of first football player (m) = 46.4 kg initial velocity of first player (u) = 5.05 m/s mass of…

Q: A hungry 5.37 kg fish swimming at 1.86 m/s swallows a 0.96 kg fish that was swimming towards it at…

A:

Q: A bicyclist going 2.5 m/s is stopped in a collision by an impulse of 250 N.s. The collision takes…

A:

Q: A rifle of mass 4.0 kg fires a 14.0 g bullet.  If the bullet travels at a velocity of 1,000.0 m/s,…

A:

Q: A 1.2kg ball is traveling to the right at 4.5m/s. It collides with a 2.1kg ball moving to the left…

A: Given data: The mass of ball moving right is m1=1.2 kg. The speed of ball moving right is u=4.5…

Q: A 11-kg bowling ball strikes a 5-kg pin. The pin flies forward with a velocity of 7.6 m/s. the ball…

A:

Q: A 12-kg bowling ball strikes a 7-kg pin. The pin flies forward with a velocity of 7.8 m/s. the ball…

A: Mass of bowling ball = 12 kg  Mass of pin = 7 kg  Final velocity of pin = 7.8 m/s  Final velocity of…

Q: A 8 kg ball is moving forward at 7 m/s and it runs into a second ball with mass 5 kg also moving…

A: In question, it's not mentioned that it's an inelastic or elastic collision but I will assume it to…

Q: A tennis ball of mass 40 grams drops to the ground from a height of 1.5 meters. What is the momentum…

A:

Q: The impulse of the force exerted by wooden target in stopping an arrow with a speed of 400 m/s is -2…

A:

Q: A 2210 kg car experiences an impulse of 20,000.0 N · s during a collision with a wall. If the…

A:

Q: A wad of putty (mass 0.4 kg) strikes a stationary box (mass 2.00 kg) and sticks to it. The velocity…

A:

Q: An 8.66 kg bowling ball rolling at 1.5 m/s bumps into a padded guardrail and stops.  What is the…

A: Given values: Mass,m=8.66 kg Velocity,v=1.5 m/s

Q: A 20 g ball of clay travelling west at 2.5 m/s collides with a 30 g ball of clay travelling south at…

A: Given Data : The mass of the clay ball moving west is given as mw = 20 g. The mass of the clay ball…

Q: A rifle of mass 6.0 kg fires a 17.0 g bullet.  If the bullet travels at a velocity of 1,000.0 m/s,…

A: Given data: Mass of rifle (M) = 6.0 kg Mass of bullet (m) = 17.0 g Velocity of the bullet (v) = 1000…

Q: A load of gravel is dumped straight down into a 30000-kg freight car coasting at 2.2 m/s on a…

A: Using law of conservation of momentum, the expression for find mass of gravel is Mu=M+mm=Mu-Mvv

Q: A bowling ball with a mass of 7.0 kg strikes a pin that has a mass of 2.0 kg. The pin flies forward…

A: Given: mb =7.0kg mp =2.0kg v1b =4.0m/s v1p =6.0m/s v0p=0m/s To find: vob.

Q: A 2.3-kg object traveling at 6.1 m/s collides head-on with a 3.5-kg object traveling in the opposite…

A:

Q: A 60 gram bullet moving at 700 m/s embeds itself in a 4.5 kg wood block. What will be the block's…

A: Given data: Mass of the bullet, mb=60 g=60×10-3 kg=0.06 kg Velocity of the bullet, vb=700 m/s Mass…

Q: A 0.20-kg model railroad car moving with a speed of 0.20 m/s is struck from behind by an 0.42-kg…

A: According to the conservation of momentum, pi=pfm1v1,i+m2v2,i=m1+m2vfvf=m1v1,i+m2v2,im1+m2

Q: A 16 g mass is moving at 50 cm/s while a 4 g mass is moving in an opposite direction at 30 cm/s.…

A:

Q: a 5 kg ball moving to the right at 5 m/s collides with a 10 kg ball moving to the left at 3 m/s. If…

A:

Q: A 1.0 kg ball moving to the left at 1.0 m/s is on a collision course with a 2.0 kilogram ball at…

A: Given: The mass (m1) of the first ball is 1 Kg. The mass (m2) of the second ball is 2 Kg. The first…

Q: A golf ball of mass 0.045 kgkg is hit off the tee at a speed of 32 m/sm/s . The golf club was in…

A: The change in momentam or impulse. Average force=change in momentam/time

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.