You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "final_velocity", "description": "Calculates the final velocity of an object given its initial velocity, acceleration, and time.", "parameters": {"initial_velocity": {"description": "The initial velocity of the object.", "type": "float"}, "acceleration": {"description": "The acceleration of the object.", "type": "float"}, "time": {"description": "The time elapsed.", "type": "float"}}}, {"name": "permutation_count", "description": "Calculates the number of permutations of k elements from a set of n elements.", "parameters": {"n": {"description": "The total number of elements in the set.", "type": "int"}, "k": {"description": "The number of elements to choose for the permutation.", "type": "int"}}}]
What will be the final velocity of a skateboard that moves initially at 8 m/s and accelerates at 1 m/s² for 7 seconds? And how many ways can you arrange 6 items from a set of 14?
user
assistant
[{"name": "final_velocity", "arguments": {"initial_velocity": 8, "acceleration": 1, "time": 7}}, {"name": "permutation_count", "arguments": {"n": 14, "k": 6}}]