True or False? (a) A car must always have an acceleration in the same direction as its velocity. (b) It's possible for a slowing car to have a positive acceleration. (c) An object with constant nonzero acceleration can never stop and remain at rest.

In order to pass a physical education class at a university, a student must run 1.0 mi in 13.3 min. After running for 10 min, she still has 670 yd to go. If her maximum acceleration is 0.15 m/s?, can she make it? (Assume the student runs at a constant speed for the first 10.0 min.) O Yes O No If the answer is no, determine what acceleration she would need to be successful. (If the answer is yes, enter 0.) |m/s²

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 11.4 m/s when going down a slope for 3.16 s? (b) How far does the skier travel in this time

A spaceship starts at rest, and then launches vertically into the air with an upward acceleration of 2.0 m/s2. When it reaches a height of 500 m, it runs out of fuel; after this point its acceleration is due to gravity, i.e. 9.8 m/s2 downward. (ignore air resistance)(a) How long does it take the spaceship to run out of fuel? (b) What is its velocity at the point when it runs out of fuel? (c) What is the maximum height that the spaceship reaches? (d) For how much time (total, from launch) is the rocket in the air? (e) What is the spaceship’s velocity just before it hits the ground?