Please show all your work. Thank you so much.

. Alison rides her bike at a constant velocity for a distance of 4000 m. She then travels at a greater speed, at a constant velocity, for 6000 m. Calculate Alison's average speed for the entire trip in m/s if the first part of her trip took 707 s and the second part took 720 s. [7.01 m/s] 14. Ryan rides his skateboard at a constant velocity for a distance of 40 m to the north for 9.8 s. He then travels at a constant velocity for a distance of 60 m to the south for 15.1 s. Calculate his average a. speed. [4.0 m/s] I to bange on sisya an In asvist be b. velocity. [0.80 m/s, south] 15. On a fishing trip on Lesser Slave Lake you drive your motorboat north at 20.0 km/h for 30.0 minutes. After realizing that you passed your fishing spot, you turn south and travel at 35 km/h for 10.0 minutes. Determine your average. a. speed for this trip. [24 km/h] b. velocity for this trip. [6.3 km/h, North]