An object under the influence of gravity is thrown straight up in the air, and moves upward until it reaches the peak of its trajectory and then moves downward returning to its starting point. Write either Downward or Upward here to show which direction you choose to be the positive direction. During the upward motion:
(a) Find the sign of the gravitation force on the object?
(b) Find the sign of the velocity?
(c) Find is the speed (magnitude of the velocity) decreasing and increasing?
(d) Use the answers to the previous two steps to find the sign of the acceleration. Show your work using a=Δv/Δt where Δv=vf -vi is the change in velocity from one velocity vi at sometime t to another velocity vf at some later time t+Δt.
(e) Determine are the force and acceleration in the same direction?