G: A 0.28 kg volleyball is pushed upwards at an acceleration of 2.8 m/s2 What is the amount of force used to pass the volleyball?

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?

Which describes an object in projectile motion? check all that apply.a.gravity acts to pull the object downb.the object moves in a straight path.c.the forward velocity of the object is 0 m/s.d.the object’s inertia carries it forward.e.the path of the object is curved.

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.