Calculate the total energy of the system just before the collision. Round the final answer to one decimal place.

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Q: A 9.50 g bullet has a speed of 1.26 km/s. (a) What is its kinetic energy in joules?  ________ kJ…

A: The kinetic energy of the bullet is KE=12mv2=129.50×10-3 kg1.26×103 m/s2=7541.1J≈7.54kJ

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Q: How fast would a(n) 82 kg man need to run in order to have the same kinetic energy as an 8.0 g…

A: Mass of man (M) = 82 kg mass of bullet (m) = 8 g = 0.008 kg velocity of bullet (v) = 430 ms

Q: A box of mass 3.0 kg slides on a horizontal frictionless table and collides with a 2.0 kg box…

A: As the collision is elastic, momentum is conserved. m1u1+m2u2 =m1+m2v Kinetic energy of a mass m…

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Q: The kinetic energy of an object of mass m, moving with a velocity of 5 ms1 is 25 J. What will be its…

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A: The mass of the first car is, m1=480 kg The initial speed of the first car is, u1=16.4 m/s The mass…

Q: Ballet In the figure, a 10 g bullet moving directly upward at 500 m/s strikes and becomes embedded…

A: mass of bullet, m = 10 g  mass of block, M =5 kg   initial velocity of bullet, u = 500 m/s

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A: The given quantities are,

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.