Answer: The force required to accelerate a 2.5 kg object at 3.0m/s is 7.5 Newtons.
Explanation: This can be calculated using Newton's second law of motion, which states that:
Force = mass × acceleration
Therefore, the force required to accelerate a 2.5 kg object at 3.0m/s is:
Force = 2.5 kg × 3.0m/s = 7.5 N
This means that a force of 7.5 Newtons would be required to cause the object to accelerate at 3.0m/s.
It is important to note that this is just the net force required to accelerate the object. In other words, it is the force required to overcome all other forces acting on the object, such as friction.