An amount of work equal to 1.5 J is required to compress the spring in a spring-gun.What is the "launch speed" of a 15-g marble?
A)14 m/s
B)15 m/s
C)18 m/s
D)21 m/s

Question

Quizplus · Accepted Answer

The potential energy stored in the spring is converted into the kinetic energy of the marble. Using the formula for kinetic energy (KE = 0.5 * m * v^2) and setting it equal to the potential energy (1.5 J), we solve for v: 1.5 = 0.5 * 0.015 * v^2, which gives v ≈ 14 m/s.

An Amount of Work Equal to 1