big fish of 220 pounds chomps a prey of 0.557 kg which is initially stationary. To do so, it swam with energy equal to 272.27 joules. Find: a) its initial velocity, b) final velocity for both big fish and prey, c) Find the change in energy.

Q: a.An atwoods machine consists of two blocks, A (m=1.3 kg) and B (m=8.7kg). Block B is released from…

A:

Q: A 18-kg child slides down a 4.0m-high playground slide. She starts from rest and her speed at the…

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Q: A 7.0 kg bowling ball moves at 2.20 m/s. How fast must a 3.00 g Ping-Pong ball move so that the two…

A: Given: The speed of the bowling ball is 2.20 m/s. The mass of the bowling ball is 7.0 kg. The mass…

Q: 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.60 g Ping-Pong ball move so that the two…

A:

Q: A car accelerates from rest to 30kph. La Which takes more energy, going from C 0 to 30kph b. 30 to…

A: Given A car accelerates from rest to 30kph. Later, on a highway it accelerates from 30kph to 60kph

Q: A 7.0 kg bowling ball moves at 2.50 m/s. How fast must a 2.60 g Ping-Pong ball move so that the two…

A: The kinetic energy of the bowling ball is

Q: A 7.0 kg bowling ball moves at 2.25 m/s. How fast must a 3.00 g Ping-Pong ball move so that the two…

A: Given information:Mass of the bowling ball (mb) = 7.0 kgMass of the ping pong ball (mp) = 3.00 g =…

Q: With the aid of necessary equations, explain total energy of a system.

A: We know that,the total enrgy of the system is sum of enrgies posse due to motion or due to the…

Q: A 1.5 g bullet takes 2.0 x 10³ s to exit the barrel of a gun which is 1.0 m long. How much energy…

A: Given data:  Mass (m) = 1.5 g = 0.0015 kg Time (t) = 2.0×10-3 s Initial velocity (Vi) = 0 m/s…

Q: 3. The energy needed to increase the speed of a certain car from 22 m/s to 54 m/s is 2900 kJ. a)…

A:

Q: . A steel ball falls from a table to the floor and then comes to rest. (a) What changes were taking…

A: A steel ball falls from a table to the floor and then comes to rest.

Q: How is the total energy of a system impacted when energy at the microscopic level changes? 5 2…

A: Hint: It depends on whether the 'system' being referred to is isolated. In other words if there is…

Q: 4. A roller coaster car tops the highest point of the ride (200 ft above the ground) at 10 ft/s .…

A: conservation of Mechanical Energy states: total amount of mechanical energy in a closed system in…

Q: 1. A 6.2kg box is moving at 2.4m/s to the left. a) What is its kinetic energy? 2.4m/s 6.2kg b) How…

A: Given data:  Mass (m) = 6.2 kg Initial velocity (u) = 2.4 m/s Work done by the friction (W) = -4 J…

Q: 4. A box of mass m= 2.0 kg initially at the bottom of a ramp is given a brief hard shove up the ramp…

A: If there was no energy loss then the bag would come back with the same kinetic energy i.e. with the…

Q: A 16.7 kg mass is thrown downward from a height of 18 m with a speed of 3.2 m/s. For the following…

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Q: A 0.140 kg baseball traveling at 30.0 m/s is caught by a catcher and moves her glove back 0.35 m…

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Q: The velocity of an object with mass m-2kg is given as a function of time: V= (2t +1)2+(t) where V is…

A:

Q: pa 21° incline w

A: Given: Mass of bundle is 6.2 Kg Incline is 21o Kinetic energy is 144 J Kinetic friction coefficient…

Q: 7. At the instant she leaves the vault, Simone's velocity is 5 m/s and she is 2.0 m high. Simone's…

A: The expression for the total mechanical energy is,

Q: Suppose an elephant has a mass of 2750 kg. 1) How fast, in meters per second, does the elephant…

A: Given: The mass of elephant is m=2750 kg. The mass of the sprinter is M=69.5 kg. The velocity of…

Q: 4. A 7 kg object is freely falling through the air. When it is 10 m above the ground it has a…

A: mass of object (m) = 7 kg height above the ground (h) = 10 m velocity (v) = 8 ms

Q: A 10-kg body falls from rest, with negligible interaction with its surroundings. Solve for its…

A: Given: Mass,m=10kgInitial Velocity,u=0m/sHeight,h=3mAcceleration due to gravity,g=9.8m/s2 An…

Q: A fun-loving, 11.0 kgkg otter slides up a hill and then back down to the same place. If she…

A: Given data:  The otter slides up and come back to the same place. Mass (m) = 11.0 kg Initial…

Q: 13. A block launched at Figure P9.13 speed v down an in- cline slides down the incline (there is…

A: solution: The block is sliding along the incline rough plane. As the plane is rough there is a loss…

Q: 17. A 10.0-kg rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of…

A:

Q: A bungee jumper has a mass of 74.3 kg and falls a distance of 113 m before the bungee catches and…

A:

Q: A car (m=1000 kg) is initially moving at a speed of 20 m/s (~45 mph) when the driver hits the brakes…

A: Work done is equal to change in kinetic energy W=∆EK=12mvf2-vi2=121000 kg0-20 ms2=-200000 J=-200 kJ

Q: A 7.0 kg bowling ball moves at 2.05 m/s. How fast must a 2.80 g Ping-Pong ball move so that the two…

A:

Q: 4. A 73 kg skier starts at rest at the top of a 100 m high hill. He skies down this hill and back up…

A:

Q: 5. How much work is done (how much energy is required) to accelerate a 1987.5 kg car entering the…

A: Given: The mass of the car is 1987.5 kg. The initial speed of the car is 18.271125 m/s. The final…

Q: A 71.4-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A:

Q: A 72.0 kg swimmer jumps into the old swimming hole from a tree limb that is 3.75 m above the water.…

A:

Q: . A basketball player at the free throw line shoots a 750 g ball at 11 m/s from 3.21 m above the…

A:

Q: A 69.7-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A: We have givenMass of boy = 69.7 kg Initial speed (u)= 1.60 m/s  Droping  height (h)= 1.64 mFinal…

Q: A power output of 18.0 h.p. is required to overcome friction and move a certain car at a constant…

A: The power required to move a body at a certain velocity is given by P = F×v, where F = the force…

Q: 4. This Olympic skeleton athlete slides down an icy track head first. The track has many twists and…

A: The total energy at the top will be the potential energy of the athlete. The athlete needs to…

Q: 8. A 27-kg child, starting from rest, slides down a playground slide from a height of 3.0 m and…

A:

Q: 6. A quarterback throws a football weighing 300 g at a speed of 3.78 m/s at a height of 0.5 meter.…

A: Given: The mass of the ball is 300 g. The initial speed of the ball is 3.78 m/s. The height of the…

Q: A 68.1-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A:

Q: 11. A pitcher throws a baseball, with a mass of 160 g, at a speed of 15.2 m/s from a height of 1.59…

A: Potential energy of an object of mass, m due to gravitational force at a height h is given by U=mgh

Q: A 71.6-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A:

Q: A ball of mass M = 2 Kg is fired (lLl) from the ground with initial velocity of 20 m/s that makes an…

A: Given:  Mass (m) = 2 kg Initial velocity (V0) = 20 m/s Angle (θ) = 30° with the horizontal Air…