Explain how will you locate the pole star with help of ursa major

Select the two stars on the far side of the quadrilateral. Join these stars with a line and extend this imaginary line towards the top of the ladle.

1 the 4 is sig

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.