The historic first playground on Mars has just opened. A child is on a swing with chains of length $2.3\mathrm{m}.$ If a parent pulls the child backward $$ from equilibrium, what is the child's maximum speed? The acceleration due to gravity on Mars is $3.7{\text{m/s}}^2$.

• A. $0.20\text{ m/s}$
• B. $0.92\text{ m/s}$
• C. $1.3\text{ m/s}$
• D. $11\text{ m/s}$
• E. $26\text{ m/s}$
• F. $0.46\text{ m/s}$