What happens to an object's motion in each of the following cases? a. an unbalanced force acts on an object? b. two unequal forces act on an object in opposite directions? c. two equal forces act on an object in opposite directions?

a.

When an unbalanced force acts on an object, net force acts on the object and as a result of this net force , the object accelerates in the direction of the unbalanced force.

b.

When two unequal forces act on an object in opposite direction, there is net force on the object in the direction of the greater of the two forces. Hence the object accelerates in the direction of greater force.

c.

When two equal forces act on an object in opposite direction, they cancel out each other and there is no net force on the object . Hence the object does not accelerate.

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.

its c i just checked it