A particle of mass m = 8 kg is released from point a on a frictionless track at height ha = 11.11 m. the acceleration of gravity is 9.8 m/s². determine the particle’s speed at point b at height hb = 2.2 m. answer in units of m/s.
a) 17.3 m/s
b) 15.6 m/s
c) 13.2 m/s
d) 11.9 m/s