Question

An object is thrown vertically upward. Which of the following statements is true: (a) Its velocity changes nonuniformly; (b) its maximum height is independent of the initial velocity; (c) its travel time upward is slightly greater than its travel time downward; or (d) its speed on returning to its starting point is the same as its initial speed

Answer 1

(a) true (V2 - V1) / (T2 - T1) = a

Since a is a constant (9.80 m/s^2 V is changing uniformly

(d) is also true because m g H = 1/2 m v^2

the KE must be the same in both directions