Taking into account the Newton's second law, the correct answer is the last option: the force needed is 270 N.
In first place, acceleration in a body occurs when a force acts on a body, and two factors influence the acceleration of an object: the net force acting on it and the mass of the body.
Newton's second law states defines the relationship between force and acceleration mathematically.
This law says that the acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object.
Mathematically, Newton's second law is expressed as:
F= m×a
where:
In this case, you know:
Replacing in the Newton's second law:
F= 54 kg× 5 m/s²
Solving:
F= 270 N
Finally, the correct answer is the last option: the force needed is 270 N.
Learn more about the Newton's second law:
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