One end of a massless, 30-cm-long spring with spring constant 25 N/m is attached to a 250 g stationary air-track glider; the other end is attached to the track. A 500 g glider hits and sticks to the 250 g glider, compressing the spring to a minimum length of 22 cm. What was the speed of the 500 g glider just before impact?

Q: A 10 kg block is released from rest at the top of a 40 degree incline that is 4 m long. If the…

A: mass of object = 10 kginitial velocity ,u= 0 m/sdistance moved on inclined surface,d= 4 mangle of…

Q: 7. A horizontal spring with spring constant 85 N/m extends outward from a wall just above floor…

A: spring constant k=85 N/m mass of horizontal spring m=7.5 kg distance x=3.5 cm mass of sprinter m=…

Q: Two pole-vaulters just clear the bar at the same height. The first lands at a speed of 8.90 m/s, and…

A:

Q: A new generation of pogo sticks lets a rider bounce more than 2 meters off the ground by using…

A: New generation of pogo sticks lets a rider bounce more than 2 meters off the ground by using elastic…

Q: You drop a ball from a height of 1.9 m , and it bounces back to a height of 1.4 m . What fraction of…

A: height = 1.9 mheight = 1.4 mWhat fraction of its initial energy is lost during the bounce?What is…

Q: Four objects (A, B, C, & D) make up a closed system. The table below shows their energy at various…

A: Given data:  Four points make a closed system  at t  = 0 s the energy at various points EA = 59 J,…

Q: A 10 kg box is dropped such that it hits a beam with a velocity of 2 m/s. After impact, the box…

A:

Q: In a “Top Fail” video (https://openstaxcollege.org/l/21topfailvideo) , two women run at each other…

A: Given data The mass of both women is m = 50 kg. The velocity of one woman to the right is v­1 = 2…

Q: A 12.0 kg bowling ball (solid sphere) is rolling along a track at 2.7m/s. It then rolls up a ramp…

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Q: An 65-g arrow is fired from a bow whose string exerts an average force of 300N on the arrow over a…

A:

Q: spring gun (spring constant k-42 N/m) is used to shoot a 30-g ball horizontally. Initially the…

A:

Q: Two ice skaters begin at rest then push off each other on very smooth ice and glide away with…

A:

Q: Calculate the kinetic energy in joules of a 1400 kgkg automobile moving at 15 m/sm/s . Express your…

A: Given data:  Mass (m) = 1400 kg Speed (v) = 15 m/s Required: Kinetic Energy (KE)

Q: 8. A rifle bullet with mass m strikes and embeds itself in a block of mass M that rests on a…

A:

Q: A 15-g bullet traveling 400 m/s in a vertical direction buries itself in a 2.8 kg block of wood at…

A: Law of conservation of momentum holds in inelastic collision.

Q: In a railroad yard a 35,000 kg boxcar moving at 9.4 m/s is stopped by a spring-loaded bumper mounted…

A: Write the given values with the suitable variables. m=35000 kgv=9.4 m/sk=2.8 MN/m=2.8×106 N/m Here,…

Q: A block of mass 3.5kg is at the top of a 30m hill moving at 5m/s. It slides down to the ground, then…

A:

Q: (https://openstaxcollege.org/l/21topfailvideo), two women run at each other and In a "Top Fail"…

A: The system's total kinetic energy must be determined. We are aware that each lady weighs 50 kg,…

Q: lands on a 10.5 cm thick gymnastics mat. The gymnast strikes the back of his head against the mat…

A: Mass of gymnast (m) = 5 kg Initial speed (v) =7.4 m/s

Q: A new generation of pogo sticks lets a rider bounce more than 2 meters off the ground by using…

A:

Q: An object of mass 1000 kg initially having a velocity of 20m/s accelerates to a final of 129 m/s.…

A: Given: mass of the object (m) = 1000 Kg            initial velocity (u) = 20 m/s            final…

Q: Mike then takes his now 1175 kg car and crashes it at 50 m/s into the back of a 1600 kg Jeep…

A:

Q: high table. The ball rebounds to 1.65 m. How much energy is lost

A: Mass of ball = 65 g. = m = 0.065 kg. Initial height = 2.50 m

Q: A 10 g bullet moving at 380 m/s strikes a ballistic pendulum of mass 3.5 kg. The bullet emerges with…

A:

Q: spring constant in N/m

A:

Q: A hammer held horizontally is allowed to swing down with the end of the handle held in place. The…

A: Given that : Weight of the hammer = 2 kg Ignoring the mass of the handle = 0.6 m After swinging down…

Q: A large spring with a spring constant of 15000 kg/sec2 is used to start a car on a roller coaster.…

A: The speed of the car when it leaves the spring is 12mv2=12kx2v=kx2m=15000 kg/s22.0 m21500 kg=6.32…

Q: A 4 kg cart moving at 5 m/s collides with a 6 kg cart that is at rest. The collision is perfectly…

A: Mass of cart 1 m=4 kg Initial velocity of cart 1 u1=5 m/s Mass of cart 2 M=6kg Initial velocity of…

Q: 5. A 360 gram cart and a heavier 480 gram cart are initially moving at a speed of 0.45 m/s to the…

A: Scenario: Two carts of different masses initially moving right are suddenly pushed away from each…

Q: 10. Each croquet ball in a set has a mass of 0.53 kg. The green ball, traveling at 11.9 m/s, strikes…

A:

Q: Problem#1:A 11-g bullet has a speed of 26 km/s. a) What is its kinetic energy in joules?

A:

Q: Two physics carts (both 100 g) with soft bumpers travel along a frictionless track toward each other…

A: Two objects adhere to each other after a perfectly inelastic collision. In such collisions, some…

Q: A B or the roller coaster shown, point A is 59 m above the ground, and point B is 36_m ove the…

A:

Q: A 0.5 kg block slides along a horizontal frictionless surface at 2.5m/s. It is brought to rest by…

A: concept: conservation of energy : energy can neither be created nor be destroyed but can transferred…

Q: A single frictionless roller-coaster car of mass m = 750 kg tops the first hill with speed v= 15 m/s…

A:

Q: The Dread Pirate Roberts is trying to fire a 12 kg cannon ball from a 250 kg cannon. In order to…

A:

Q: Calculate the kinetic energies of (a) a 2000.0-kg automobile moving at 100.0 km/h; (b) an 80.-kg…

A: The kinetic energies are to be evaluated for the following cases: a) mass, m=2000 Kg automobile…

Q: A 30-caliber rifle with a mass of 3.14 kg fires a 9.33- g bullet with a speed of 596 m/s with…

A: Given

Q: ight of 2.1 m, its

A: Given: Frisbee mass is 75 g       speed is 12 m/s Distance above ground is 1.1 m height is 2.1 m…

Q: 6.00 × 105 J of work are done on a 2210 kg car while it accelerates from 15.0 m/s to some final…

A:

Q: 1500kg sport car is moving westbound at 20m/s on a level road when it collided with a 4000kg truck…

A: 1500kg sport car is moving westbound at 20m/s on a level road when it collided with a 4000kg truck…

Q: An explosion causes an object to be split into two separate pieces, A and B. The kinetic energy of…

A: Correction : it will be the ratio of the masses not mass to volume ratio as the point of calculation…

Q: A 2.5-kg block (#1) is placed on a frictionless ramp and released from rest at height h = 50 cm.…

A:

Q: A running man has half the kinetic energy of a boy half his mass. The man speeds up by 1.0m/s and…

A:

Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.