Could someone help, i am a little confused. B is from another question. 5a = 6.3 s (T), and we now want to find the range of the cliff.

2. In a two-person bobsled competition, athlete 1 pushes forward on the sled with 311 N and athlete 2 pushes forward with 354 N. A force of friction of 41 N [backwards] is acting on the bobsled. If the bobsled accelerates at 1.6 m/s what is the mass of the bobsled? Don't forget to draw an FBD for full marks. (4)b. What is the range of the rock from the base of the cliff? (2)5. A rock is thrown horizontally at 15 m/sfrom the top of a cliff 2.00x 102 m high