Which factors are used the calculate the kinetic energy of an object? check all that apply. gravity velocity volume mass height

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.