A spring-loaded gun shoots a plastic ball with a speed of 4 m/s. If the spring is compressed twice as far, the ball's speed will be

According to the question,

As we know,

→

→      

then,

→

By substituting the values, we get

Thus the response above is appropriate.

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v' = 8

Explanation:

Given:

Speed v = 4 m/s

Find:

New compressed speed

Computation:

1/2(k)(x)² = 1/2(m)(v)²

v = √kx²/m = 4

If x become double

v' = √k(2x)²/m

v' = 2√kx²/m

v' = 2(4)

v' = 8

explanation:

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