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A student performs a ballistic pendulum experiment using an apparatus similar to that shown in the first figure. She obtains the following average data: h = 8.59 cm, projectile mass m₁ = 63.3 g, and pendulum mass m₂ = 263 g. m₁ Vi m₂ b of h С (a) Determine the initial speed V₁1A of the projectile. m/s (b) The second part of her experiment is to obtain V₁A by firing the same projectile horizontally (with the pendulum removed from the path) and measuring its horizontal position x and distance of fall y, as shown in the second figure. What numerical value does she obtain for V₁A on the basis of her measured values of x = 277 cm and y = 87.4 cm? m/s