Aboy is inning with a kinetic energy of 810j. if the boy has a mass of 80kg. what is his speed ?

How much force was applied to an object if was moved 2 meters and the work done on the object was 8 joules? a. 0.25 n b. 4 n c. 6 n d. 16 n

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply