A bicycle travelling at 8.0m/s [East] slows to 3.0m/s [East]. What is the bicycle's change in velocity and direction of acceleration

A car travels on a straight, level road. (a) Starting from rest, the car is going 44 ft/s (30 mi/h) at the end of 5.0 s. What is the cars average acceleration in ft/s2? (b) In 4.0 more seconds, the car is going 88 ft/s (60 mi/h). What is the cars average acceleration for this time period? (c) The car then slows to 66 ft/s (45 mi/h) in 3.0 s. What is the average acceleration for this time period? (d) What is the overall average acceleration for the total time? (Note these convenient British unit conversions: 60 mi/h = 88 ft/s, 45 mi/h = 66 ft/s, and 30 mi/h = 44 ft/s.)

Over a period of 3.0 s a car’s velocity changes from 18 m/s [W] to 12 m/s [W]. What is the car’s acceleration during this time?

While entering a freeway, a car accelerates from rest at a rate of 2.8 m/s2 for 14.5 s. How far does the car travel in those 14.5 s, in meters? And what is the car's final velocity, in meters per second?