QuestionDetails: An object under the influence of gravity isthrown straight up i

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QuestionDetails: An object under the influence of gravity isthrown straight up in the air, and moves upward until it reachesthe peak of its trajectory and then moves downward returning to itsstarting point. Write either Upward or Downward here to showwhich direction you choose to be the positive direction. During the upward motion: (a) What is the sign of the gravitation force onthe object? (b) What is the sign of the velocity? (c) Is the speed (magnitude of the velocity)increasing or decreasing? (d) Use the answers to the previous two steps todetermine the sign of the acceleration. Show your work using a=v/t where v=vf -viis the change in velocity from one velocity vi at sometime t to another velocity vf at some later timet+t. (e) Are the force and acceleration in the samedirection? Repeat items a-e above for the downward motion. QuestionDetails: An object under the influence of gravity isthrown straight up in the air, and moves upward until it reachesthe peak of its trajectory and then moves downward returning to itsstarting point. Write either Upward or Downward here to showwhich direction you choose to be the positive direction. During the upward motion: (a) What is the sign of the gravitation force onthe object? (b) What is the sign of the velocity? (c) Is the speed (magnitude of the velocity)increasing or decreasing? (d) Use the answers to the previous two steps todetermine the sign of the acceleration. Show your work using a=v/t where v=vf -viis the change in velocity from one velocity vi at sometime t to another velocity vf at some later timet+t. (e) Are the force and acceleration in the samedirection? Repeat items a-e above for the downward motion.

Explanation / Answer

a) negative b) positive c) decreasing d) if a= v/t and the velocity is decreasingthe Vf < Vi so Vf -Vi is negative and since Tf >Ti then Tf - Ti ispositive so a negative divided by a positive is a negative
Therefore, a is negative e) Yes it is because they're both vector quatntaties Part 2 a) negative b) negative c) Increasing d) a is negative because Vf has a negative sign infront of it because of it's direction so Vf is stillless then Vi e)Yes because they're both vecotr quantities e)Yes because they're both vecotr quantities

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