Question

beverage can is thrown upward and then falls back down to the floor. As usual, a y axis extends upward (positive direction). Which of the following best describes the acceleration of the can during its free flight?a) -9.8 m/s^2, then momentarily zero, then +9.8 m/s^2b) +9.8 m/s^2 throughoutc) -9.8 m/s^2 throughoutd) zero throughoute) +9.8 m/s^2, then momentarily zero, then -9.8 m/s^2

Answer 1

The answer is  a)  -9.8 m/s^2, then momentarily zero, then +9.8 m/s^2, that is because during this kind of movement we have  a = g, a acceleration and g acceler. of gravity, from zero of the axis to upward a = -g (a and g are contrary by direction), the can stopes before it falls, it means a = o, and during the free fall a = g (same direction).