Solve the all parts of given question:
Question: A commuter backs her minivan out of her driveway with a constant acceleration of 1.4 m/s2. Assume that her initial motion is in the positive direction.
Part A: How long does it take her to reach a speed of 2.2 m/s in seconds?
Part B: If she then brakes to a stop in 0.85 s, what is her acceleration in meters per square second?
I need help to determine her acceleration in meters per square second.