An object with a mass of 7 kg accelerates 5 m/s2 when an unknown force is applied to it. What is the unknown force?

35 N

Explanation:

Force, F = ma where m = mass = 7 kg and a = acceleration = 5 m/s².

So, F = ma = 7 kg × 5 m/s² = 35 N

i wanna say it’s between b and d, leaning more towards b.

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.