# 2. A student performs a ballistic pendulum experiment using

2. 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 = 8.70 cm, projectile mass m1 = 67.2 g, and pendulum mass m2 = 263 g.http://www.webassign.net/serpse8/9-p-056.gifhttp://www.webassign.net/serpse8/9-p-070.gif(a) Determine the initial speed v1A of the projectile.answer in 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 = 272 cm and y = 92.5 cm?answer in m/s(c) What factors might account for the difference in this value compared to that obtained in part (a)?