Asubstant forms when positively charged particles and negativily charged particles attract each other the substance is?

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)

Which levels of government establish and implement educational requirements for minors

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration