changes

Q: Which of the following four objects has different kinetic energy? a) An object of mass 4m moving…

A: The kinetic energy of an object is given by,

Q: If an object's speed is increased to 2 times its original speed, the object's kinetic energy will…

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Q: An automobile traveling at 25 km/hour has kinetic energy equal to 1 x 104J. What is the mass of the…

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Q: You have an object of mass 3.9 kg. If it is moving at a speed of 12.3 m/s and is a distance of 34.1…

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Q: What is the mass of an object moving at a speed 7.1 m/s that has a kinetic energy 242 J?  Give your…

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Q: Two masses m1 = 4.50 kg and m2 which has a mass 60.0% that of m1, are attached to a cord of…

A: Given: Mass of first block m1 is 4.50 kg. Speed of the masses is 2.42 m/s. Formula Used: Mass of…

Q: Suppose an elephant has a mass of 3050 kg. How fast in meters per second does the elephant need to…

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Q: what is the kinetic energy of a bullet of mass 5.00 g traveling at a speed of 305 m/s. what is the…

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Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

A: A box of mass 4 kg is hanging from the ceiling of an elevtorThe elevator is moving with a uniform…

Q: As shown in the figure below, two masses m1 = 4.20kg and m2 which has a mass 50.0% that of m1, are…

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Q: A rock with a mass of 2.40 kg is moving with velocity (6.40î − 2.40ĵ) m/s. What is the…

A: 1) Determine the kinetic energy of the rock.

Q: An object of mass (m = 5.4 kg) moves under the influence of one force. That force causes the object…

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Q: Suppose an acorn with a mass of 3.17g falls off a tree. At a particular moment during the fall, the…

A: Given data:  Mass (m) = 3.17 g Kinetic energy (KE) = 0.309 J Potential Energy (PE) = 0.157 J…

Q: What is the speed of a 0.25 kg ball if its kinetic energy is 15 J?   Question 2 options:   A)  1.4…

A: Here mass of ball and Kinetic energy of ball is given ,so we can calculate speed of ball using…

Q: A 50 kg bicyclist on a 10 kg bicycle speeds up from 5.0 m/s to 10 m/s.           (a)  What was the…

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Q: An object has a kinetic energy of 300 J. The object's mass is tripled, the sıze of the object is…

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Q: A crate with mass of 2121 kg is dropped off a building 2222 m above the ground. Assuming a complete…

A: By conservation of mechanical Energy Initial potential energy = final kinetic energy Initial…

Q: Starting from rest, a ball of mass 4 kg is accelerated at 5 m/s2 for 11 s. What is the final kinetic…

A: Given Data, Mass of the ball (m)=4 kg Acceleration (a)= 5 m/s2 Time (t)=11 s

Q: A baseball of mass 0.26 kg is thrown at a speed of 41.5 mi/h. What is its kinetic energy?

A: mass of baseball (m) = 0.26 kg speed (v) = 41.5 mihr