1) A high-performance sports car can go from 0 to 100 mph in 8.0 s. (Assume the car travels in the positive direction. Indicate the direction with the sign of your answer.) (a) What is the car's average acceleration (in SI units; meter-kilogram-second)?
(b) The same car can come to a complete stop from 34 m/s in 3.9 s. What is its average acceleration?
2) During takeoff, an airplane goes from 0 to 56 m/s in 6 s. (a) What is its acceleration?
(b) How fast is it going after 4 s?
(c) How far has it traveled by the time it reaches 56 m/s?
3) Initially stationary (the train starts at rest), a train has a constant acceleration of 0.6 m/s2. (a) What is its speed after 29 s?
(b) What would be the total time it would take to reach a speed of 28 m/s?
4) During a NASCAR race a car goes 78 m/s around a curved section of track that has a radius of 230 m. What is the car's acceleration?