An older-model car accelerates from 0 to speed vin 15 s. A newer, more powerful sports car of the same mass accelerates from 0 to 3v in the same time period. Assuming the energy coming from the engine appears only as kinetic energy of the cars, compare the power of the two cars.

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: Two carts, C and D, are initially at rest on a horizontal frictionless table as shown in the…

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Q: Common misconceptions about energy: (With Explanation) 6. An object at rest has no energy.

A: As we know energy is neither created nor destroyed, it only converted from one form into another.

Q: Two bodies (A, B) where mass (B) is 4 times (A) and their kinetic energy is equal (PA: PB) are:

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Q: A 7.5 kg bird is flying 9.4 meter above the ground at a speed of 1.2 m/s. Calculate the following…

A: mass = 7.5 Kg height = 9.4 m Velocity = 1.2 m/s Kinetic Energy = 0.5*7.5*1.2*1.2 = 5.4 J

Q: What is the work done by the force 2xi + 3yj from 3,1 to 3,2?

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Q: Certain force acting on a 20Kg mass changes its velocity from from 5m/s to 2m/s. Calculate the work…

A: Given :Mass = 20kgIntial speed (u) =5m/sFinal speed (V) = 2m/s

Q: A 2.50 kg mass is dropped from rest. If it falls a distance of 25.o m what will its change in…

A: Given  Mass m = 2.5 kg decrease in elevation of mass h = 25 m change in KE ?

Q: · A projectile of mass 9.4 kg is fired straight up with an initial speed of 470 m/s. How much higher…

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Q: The encigy necded to the Specd t 22 ms Inorease a from eertain 44 ms car to is 240 kJ. a) Wlat is…

A: The energy needed to increase the speed of a a certain car from 22 MS to 44 MS is 240 kj. what is…

Q: 26. Calculate (i) the kinetic energy stored in a mass of 48 kg when moving with a velocity of 25…

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Q: 16) a satellite of mass 640.0 kg was lifted to a height of 750 km above the Earth's surface and was…

A: Mass of satellite (m) = 640 kg  lifted to height (h)=750 km=750000m  Revolving around earth with the…

Q: Which would cause the greatest increase in the kinetic energy of a moving object? Doubling the mass…

A: Let the mass of an object = m  Let the speed of an object = v  Let the kinetic energy of moving…

Q: How fast must the swim

A: Sloth must swim at speed of 0.119 m/s Explanation is in next step.

Q: 16. (I) (a) If the kinetic energy of a particle is tripled, by what factor has its speed increased?…

A: We know that  K.E. = 12m v2 a)  so if K.E. has increased by 3 times than the velocity factor must…