What force is necessary to accelerate a 1250 kg car at a rate of4m/s squared

5000N

Explanation:

F=ma

(resultant) Force(N)= mass(kg) × acceleration (m/s^2)

input values into formula

F= 1250kg × 4m/s^2

F= 5000N

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.

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