Everybody say I changed..but they changed on me..

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

Which best represents the law of conservation of mass ?