A physics experiment involves the launching of a projectile from an Olympic Bob Sled track. The projectile is an empty Bob Sled, with a mass of 180 kg. The Sled starts moving from rest at the location labeled "A" on the diagram shown below. (There is no friction.) a) What is the Total Energy of the Sled at Location-A? b) What is the Launch Velocity of the Sled? c) At maximum height in flight, how high above the ground is the sled?