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4. A 900-kg compact car moving at 26.7 m/s has approximately 320,000 Joules of kinetic energy. What is its new kinetic energy if it is moving at 13.3 m/s?​
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4. A 900-kg compact car moving at 26.7 m/s has approximately 320,000 Joules of kinetic energy. What is its new kinetic energy if it is moving at 13.3 m/s?​

User Ebone
by
4.2k points

1 Answer

9 votes

Answer:

79600.5J

Step-by-step explanation:

Given parameters:

Mass of compact car = 900kg

Initial velocity = 26.7m/s

Energy = 320000J

New velocity = 13.3m/s

Unknown:

New kinetic energy = ?

Solution:

Kinetic energy is the energy due to the motion of a body.

Kinetic energy =
(1)/(2) m v²

m is the mass

v is the new velocity

Kinetic energy =
(1)/(2) x 900 x 13.3² = 79600.5J

User Dhaker
by
5.0k points
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