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lozanna [386]
3 years ago
14

A 600 kg car is at test and then accelerated to 5m/s , what is its original kinetic energy

Physics
1 answer:
ycow [4]3 years ago
3 0

Answer:

0 J

Explanation:

Kinetic energy is defined as:

KE = 1/2 m v²

where m is mass and v is velocity.

The car starts at rest, so it has zero velocity.  Therefore, its initial kinetic energy is 0 J.

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A 11,000-kg train car moving due east at 21.0 m/s collides with and couples to a 23,000-kg train car that is initially at rest.
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Answer:

v = 6.79 m/s

Explanation:

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V is the common velocity after the collisions

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