Gayle runs at 2.6 m/s and dives on a sled, initially at rest onto the top of a frictionless snow covered hill. After she and the sled have descended...

Gayle runs at 2.6 m/s and dives on a sled,initially at rest onto the top of a frictionlesssnow covered hill. After she and the sledhave descended a vertical distance of 3.15 m,her brother who is initially at rest hops onher back and together they continue down thehill.The acceleration of gravity is 9.8 m/s2 .What is their speed at the bottom if thetotal vertical drop is 17 m? Gayle’s mass is51.4 kg, the sled’s is 4.32 kg and her brother’sis 36 kg.Answer in units of m/s.