A Spring-Powered Launcher Has a Spring with a Spring Constant

question 57

Multiple Choice

A spring-powered launcher has a spring with a spring constant of 150 N/cm.The launcher is prepared to launch a projectile by compressing the spring by 5.00 cm.If the mass of the projectile is 5.00 grams,then what is the velocity of the projectile when it is launched from the launcher?

• A) 90.6 m/s
• B) 86.6 m/s
• C) 75.5 m/s
• D) 60.3 m/s
• E) 56.6 m/s

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A method used to find the last occurrence of a specified value in a string or array, returning the index at which it was found, or -1 if it is not found.

Substring

A portion of a string or sequence of characters within a larger string.

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Equals is a method typically defined in object-oriented programming languages to evaluate whether two objects are equivalent in value or state.