Which of the following are true for an object in projectile motion?

check all that apply.

a. the time it takes the object to reach the ground is not affected by its initial velocity.
b. the object accelerates to earth at g = 9.8 m/s2.
c. the horizontal and vertical motions are independent.
d. the only force acting on the object is gravity.

When there are advances in technology, such as the personal computer, how might business productivity change? a) productivity is separate from technological advances so there is no impact. the new technology can replace outdated, less efficient, machinery. o) the businesses' products will no longer be demanded. d) manufactured items will be made elsewhere.