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3 years ago

A 20.5 kg ball moving at 38.5 m/s on a horizontal, frictionless surface runs into a light spring of force

Physics

1 answer:

tekilochka [14]3 years ago

5 0

Answer:

7.68 m

Explanation:

Kinetic energy in ball = elastic energy in spring

KE = EE

½ mv² = ½ kx²

mv² = kx²

x = v √(m / k)

x = (38.5 m/s) √(20.5 kg / 515 N/m)

x = 7.68 m

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