3.)John and his dog are running toward a tennis court which is located 4000.0 m away. John runs at 2.5 m/s in a straight line. The dog is unleashed and runs back and forth at 4.5 m/s between the court and John, until she reaches the court. Find the total distance run by the dog.

Solve the following problems completely: 1. An athlete jogs north 5.0 km at 4.0 km/h and then west 12 km at 8.0 km/hr. Determine: a) the total distance of the entire trip b) the total displacement of the entire trip c) the average speed of the entire trip d) the average velocity of the entire trip e) the average acceleration of the entire trip 2. A swimmer heads directly across a river swimming at 1.8 m/s relative to still water. She arrives at a point 65 m downstream from the point directly across the river, which is 50 m wide. Determine: a) the speed of the current b) the magnitude of the swimmer's resultant velocity c) the direction of the swimmer's resultant velocity d) the time it takes the swimmer to cross the river

2. Write the kinematic equations for distance and velocity describing a particle moving in the x-direction with initial position 4m, initial velocity 2m/s, undergoing a constant acceleration of 3m/s² a) x(t) %D b) v(t) =

3. A person walks first at a constant speed of 2 m/s along a straight line from point A to point B and then back along the line from point B to point A at a constant speed of 4 m/s. What is her average speed over the entire trip (in m/s)? A)2.67 B) 4.46 C) 3.75 D) 6.86